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Typical animal cell Stock Photos and Images
RF2WH28AB–Anatomy of animal cell. Human cell structure. All organelles: Nucleus, Ribosome, Rough endoplasmic reticulum, Golgi apparatus, mitochondrion, cytoplas
RF2GDKJ59–Animal cell, typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles, typical animal cell
RMG3E619–Masai man checks his cell phone while herding cattle in a village near the Masai Mara, Kenya, East Africa
RFF8E7YD–Background of large group of fish in ices seen from above at the fish market of Manaus, Brazil 2015
RFMXRH70–Nest of black-headed gulls with typical clutch of eggs. Three speckled eggs are in nest made of dry grass, weave a nest. Reproduction of birds, nestli
RFJXYW68–Rissani, Morocco - May 09, 2017: Local moroccan customers standing in the morning in front of the butcher shop at the market in Rissani, Morocco, wait
![Elementary anatomy, physiology and hygiene for higher grammar grades . a cell. It seems wonder-ful that all these parts can befound within an object too smallto be seen without a microscope.When we learn of the work whichthe cell is doing and the part whichit plays in the world, it will allseem like a fairy story, but allFig. 6.—A typical animal cell, of the facts to be given here have Notioe that in this cell all the -i i i . , parts except the cell sap may been observed many times by menbe found. [Verworn.] ^^q devote their lives to the study of these problem,s.Every one has noticed the gre Stock Photo](https://c8.alamy.com/comp/2AM8K1F/elementary-anatomy-physiology-and-hygiene-for-higher-grammar-grades-a-cell-it-seems-wonder-ful-that-all-these-parts-can-befound-within-an-object-too-smallto-be-seen-without-a-microscopewhen-we-learn-of-the-work-whichthe-cell-is-doing-and-the-part-whichit-plays-in-the-world-it-will-allseem-like-a-fairy-story-but-allfig-6a-typical-animal-cell-of-the-facts-to-be-given-here-have-notioe-that-in-this-cell-all-the-i-i-i-parts-except-the-cell-sap-may-been-observed-many-times-by-menbe-found-verworn-q-devote-their-lives-to-the-study-of-these-problemsevery-one-has-noticed-the-gre-2AM8K1F.jpg "Elementary anatomy, physiology and hygiene for higher grammar grades . a cell. It seems wonder-ful that all these parts can befound within an object too smallto be seen without a microscope.When we learn of the work whichthe cell is doing and the part whichit plays in the world, it will allseem like a fairy story, but allFig. 6.—A typical animal cell, of the facts to be given here have Notioe that in this cell all the -i i i . , parts except the cell sap may been observed many times by menbe found. [Verworn.] ^^q devote their lives to the study of these problem,s.Every one has noticed the gre Stock Photo")
RM2AM8K1F–Elementary anatomy, physiology and hygiene for higher grammar grades . a cell. It seems wonder-ful that all these parts can befound within an object too smallto be seen without a microscope.When we learn of the work whichthe cell is doing and the part whichit plays in the world, it will allseem like a fairy story, but allFig. 6.—A typical animal cell, of the facts to be given here have Notioe that in this cell all the -i i i . , parts except the cell sap may been observed many times by menbe found. [Verworn.] ^^q devote their lives to the study of these problem,s.Every one has noticed the gre
RMA4HFJ1–The Royal Andalusian School of Equestrian Art Jerez de la Frontera Cadiz Spain Europe Restriction Not to be used for commertial
RF2GDKJ71–Animal cell, typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles, typical animal cell
RMRWW91P–Elements of biology, with special Elements of biology, with special reference to their rôle in the lives of animals elementsofbiolog00buch Year: 1933 HEREDITY 307 analyses which show it to be composed of nucleo-proteins. Our chief interest here is in its behavior, first, during mitotic cell di- vision. The account given is in general applicable to mitosis in all sorts of animal cells. When the description of a typical animal cell is recalled, it will be remembered that the nucleus is surrounded by a thin membrane, outside of which is a small body, the centrosome, that was said to play a part
RFF8E7KN–Background of large group of fish in ices seen from above at the fish market of Manaus, Brazil 2015
RFMXRH6Y–Nest of black-headed gulls with typical clutch of eggs. Three speckled eggs are in nest made of dry grass, weave a nest. Reproduction of birds, nestli
![. Advanced biology. Biology; Physiology; Reproduction. 46 TYPICAL ANIMAL CELL. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Wheat, Frank Merrill; Fitzpatrick, Elizabeth T. New York ; Boston [etc. ] : American Book Company Stock Photo](https://c8.alamy.com/comp/RR289N/advanced-biology-biology-physiology-reproduction-46-typical-animal-cell-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-wheat-frank-merrill-fitzpatrick-elizabeth-t-new-york-boston-etc-american-book-company-RR289N.jpg ". Advanced biology. Biology; Physiology; Reproduction. 46 TYPICAL ANIMAL CELL. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Wheat, Frank Merrill; Fitzpatrick, Elizabeth T. New York ; Boston [etc. ] : American Book Company Stock Photo")
RMRR289N–. Advanced biology. Biology; Physiology; Reproduction. 46 TYPICAL ANIMAL CELL. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Wheat, Frank Merrill; Fitzpatrick, Elizabeth T. New York ; Boston [etc. ] : American Book Company
RMA4HFJ2–The Royal Andalusian School of Equestrian Art Jerez de la Frontera Cadiz Spain Europe Restriction Not to be used for commertial
RF2GDKPMR–Typical fungus cell, eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar saccharomyces
RFF8E7Y7–Background of large group of fish in ices seen from above at the fish market of Manaus, Brazil 2015
RFP0GF14–Nest of black-headed gulls with typical clutch of eggs. Three speckled eggs are in nest made of dry grass, weave a nest. Reproduction of birds, nestli
RMRDYX5G–. Principles of modern biology. Biology. 18 - The Cell. NUCLEOPLASM CHROMATIN PLASMA MEMBRANE NUCLEAR MEMBRANE CYTOPLASM Fig. 2-2. A typical animal cell. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marsland, Douglas, 1899-. New York, Holt, Rinehart and Winston
RF2GDKPMM–Typical fungus cell, eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar saccharomyces
RMRR2897–. Advanced biology. Biology; Physiology; Reproduction. 48 TYPICAL ANIMAL CELL The physiological functions of the Paramecium are somewhat more complex than those of the amoeba because of the increasing complexity of structure. Nutrition. Bacteria and any other tiny plants or protozoa that are small enough are swept by the current created by the cilia into the oral groove. These ^Mmm/A. ^j.g driven through the gul- let, where they are made into a food ball and dis- charged into the cytoplasm of the cell. The food ball is carried around as a vac- uole by the streaming cyto- plasm. The processes
RF2GDKMCW–Typical animal tissue, typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles.
RMRR28A3–. Advanced biology. Biology; Physiology; Reproduction. 44 TYPICAL ANIMAL CELL. Assimilation. The digested protein together with water and absorbed mineral matter are converted into protoplasm by the ac- tivity of the cytoplasm of the living amoeba. This is as- simihition. As a result of as- similation, new protoplasm is formed and the animal grows. Respiration. Oxygen from the air in the water mav enter through any part of the surface of the amoeba. It meets the digested nutrients in the cytoplasm and oxida- tion takes place, that is, oxy- gen combines with carbon and A patient investigator wa
RF2GDKM94–Typical animal tissue, typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles.
RMRDYWMJ–. Principles of modern biology. Biology. TELOPHASES DAUGHTER CELLS Fig. 3-4. Mitosis in a typical animal cell (egg cell of a sea urchin). Note particularly the asters, centrioles, and cleavage furrows. These structures are rarely found in plant cells.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marsland, Douglas, 1899-. New York, Holt, Rinehart and Winston
RF2GDKJN0–Plant cell, the basic unit of all plants. Plant cells, like animal cells, are eukaryotic, meaning they have a membrane-bound nucleus and organelles.
RMRDYX12–. Principles of modern biology. Biology. CENTRIOLES ASTER- PROPHASES METAPHASES EARLY LATE. NUCLEAR MEMBRANE RE-FORMING ANAPHASE TELOPHASES Fig. 3-2. Diagram depicting modern concept of mitosis as observed in a typical animal cell system of protoplasmic fibers, collectively called the spindle. The mitotic centers are regarded as specialized parts of the cyto- plasm, situated at the ends, or poles, of the spindle, although these regions sometimes are not very clearly delineated, especially in plant cells. The fibers toward each end of the spindle always converge, however, toward a definitely lo
RF2GDKRDN–Budding fungus cell structure, Anatomy of fungal cell, typical labeled and detailed diagram of fungus cell in kingdom fungi
RMRHJYCJ–. Biology; the story of living things. 130 FUNDAMENTALS OF STRUCTURE AND FUNCTION. Xell membrane Cytoplasm ..Cenfrosomes ...Nucleolus Nucleus Plasiid Vacuole Diagram of a typical animal cell. to the outer part of the cell, while the vacuoles form large sap cavities within the cell. Although Golgi bodies appear much less stable and more changeable in form than plastids, they are found in many kinds of plant and animal cells. Fibrils of various kinds, such as those seen in a muscle cell, are frequently found. In plants the cell wall, a delicate but rigid, secreted cellulose covering, is lined wi
RMRDYX5E–. Principles of modern biology. Biology. NUCLEOPLASM CHROMATIN PLASMA MEMBRANE NUCLEAR MEMBRANE CYTOPLASM Fig. 2-2. A typical animal cell. Fig. 2-3. In a few primitive cells the nuclear and cytoplasmic materials are not separated very distinctly; that is, no distinct nuclear mem- brane is present. In this case the chromatin granules, or chromidia (the most darkly shaded particles in the cells), are more or less scattered throughout the cytoplasm. A, B, and C, cells of different blue-green algae, showing transitional stages in the development of the delimited type of nucleus. (After Acton.) i
RMRDYWMF–. Principles of modern biology. Biology. TELOPHASES DAUGHTER CELLS Fig. 3-4. Mitosis in a typical animal cell (egg cell of a sea urchin). Note particularly the asters, centrioles, and cleavage furrows. These structures are rarely found in plant cells.. CROSS SECTION LONGITUDINAL SECTION Fig. 3-5. Paired centrioles of a human tumor cell (Desille lymphosarcoma). Final magnification, X 160,000 (approximate). Note the pattern revealed by the cross section: nine triplet groups of tubules (or perhaps fibers) arranged in a circle. This pattern appears to be general, as indicated in electronmicrograph
RM2AN1R27–The philosophy of biology . We may state verybriefly the main facts of ^.^^^^.^.^^^the development of a ^c^x ^^ typical animal ovum,such as that of the sea-urchin. The fertilised ovum fig. 12. divides into two (2), and then each of these blastomeres divides agiain in a planeperpendicular to the first division plane (3). The thirddivision plane is at right angles to the first two, and itcuts off a tier of smaller blastomeres from the tops of thefirst four. There are now (4) two tiers of blastomeres,a lower tier of large blastomeres and an upper tierof smaller ones. This is the 8-cell stage. Nex
RM2AJEG7M–The cell in development and inheritance . only a part of the truth.Blochmann (88-89) had found that in the parthenogenetic eggsof the honey-bee tivo polar bodies are formed, and Platner discov-ered the same fact in the butterfly Liparis (89) — a fact whichseemed to contradict Boveris hypothesis. Brauers beautiful re-searches resolved the contradiction by showing that there are tzvotypes oi parthcnoge?iesis which may occur in the same animal. In theone case Boveris conception is exactly realized, while the other iseasily brought into relation with it. (a) In both modes typical tetrads are forme
RM2CE258E–. Biology . the front end and afterward at theposterior end. The girdle thus forms a cocoon, which hardenslater into a chitinous spindle-shaped vessel containing repro-ductive cells and albuminoid food material (Fig. 65). The eggsare fertilized in the coccoon by the spermatozoa, and develop-ment begins at once, continuing under the protection of thecocoon. Cleavageof the egg is regular up to the i6-cell stage, with fourvegetative cells at the lower, and smaller animal cells at theupper pole. The lower cells invaginate and form a typical two- EMBRYOLOGY OF THE EARTHWORM 159 layered gastrula. Up
RMRCW4M1–. Elements of biology, with special reference to their rôle in the lives of animals. Biology; Zoology. HEREDITY 307 analyses which show it to be composed of nucleo-proteins. Our chief interest here is in its behavior, first, during mitotic cell di- vision. The account given is in general applicable to mitosis in all sorts of animal cells. When the description of a typical animal cell is recalled, it will be remembered that the nucleus is surrounded by a thin membrane, outside of which is a small body, the centrosome, that was said to play a part in the division of the cell. Within the nuclear
RMRDJA4H–. Text-book of embryology. Embryology. INTRODUCTION 23 they are placed, it is thereby imphed that they once possessed the normal features exhibited by the typical members of these groups; and therefore, beyond all question, their late larval stages must he of an ancestral character. It follows, then, that advances in evolution do, as a rule, manifest themselves when the animal is fully adult. But recent research in the laws of heredity has rendered it almost certain that inheritable variations are only those which affect the nature of the germ cell, and most zoologists refuse to believe that t
![. Biology; the story of living things. 140 FUNDAMENTALS OF STRUCTURE AND FUNCTION idL "bouiillus/. Anthro^ bacillus^ As to shapes, their name is legion. A typical cell might be thought of as a spherical or ovoid body, but we find them cubical, flat, thread- like, spindle-shaped, columnar, or irregular in outline. They are often modified by being com- pressed by other cells, but frequently if given opportunity will resume their original form when released from pressure. Structural differences exist between plant and animal cells, the chief of which is the cellulose wall, characteristic of Stock Photo](https://c8.alamy.com/comp/RHJYA6/biology-the-story-of-living-things-140-fundamentals-of-structure-and-function-idl-quotbouiillus-anthro-bacillus-as-to-shapes-their-name-is-legion-a-typical-cell-might-be-thought-of-as-a-spherical-or-ovoid-body-but-we-find-them-cubical-flat-thread-like-spindle-shaped-columnar-or-irregular-in-outline-they-are-often-modified-by-being-com-pressed-by-other-cells-but-frequently-if-given-opportunity-will-resume-their-original-form-when-released-from-pressure-structural-differences-exist-between-plant-and-animal-cells-the-chief-of-which-is-the-cellulose-wall-characteristic-of-RHJYA6.jpg ". Biology; the story of living things. 140 FUNDAMENTALS OF STRUCTURE AND FUNCTION idL "bouiillus/. Anthro^ bacillus^ As to shapes, their name is legion. A typical cell might be thought of as a spherical or ovoid body, but we find them cubical, flat, thread- like, spindle-shaped, columnar, or irregular in outline. They are often modified by being com- pressed by other cells, but frequently if given opportunity will resume their original form when released from pressure. Structural differences exist between plant and animal cells, the chief of which is the cellulose wall, characteristic of Stock Photo")
RMRHJYA6–. Biology; the story of living things. 140 FUNDAMENTALS OF STRUCTURE AND FUNCTION idL "bouiillus/. Anthro^ bacillus^ As to shapes, their name is legion. A typical cell might be thought of as a spherical or ovoid body, but we find them cubical, flat, thread- like, spindle-shaped, columnar, or irregular in outline. They are often modified by being com- pressed by other cells, but frequently if given opportunity will resume their original form when released from pressure. Structural differences exist between plant and animal cells, the chief of which is the cellulose wall, characteristic of
![. Principles of modern biology. Biology. 34 - The Cell The different physical properties of the cell wall and pellicle reflect a fundamental dif- ference of chemical constitution. The cell wall of the typical plant cell is composed mainly of a carbohydrate substance, cellu- lose, which is the special component of all "woody" materials. But the pellicular cover- ing of typical animal cells is composed mainly, if not entirely, of mucoprotein substances (Chap. 4). Extraneous material, found between the cells of certain tissues, is designated generally as intercellular matrix. In some ti Stock Photo](https://c8.alamy.com/comp/RDYX2N/principles-of-modern-biology-biology-34-the-cell-the-different-physical-properties-of-the-cell-wall-and-pellicle-reflect-a-fundamental-dif-ference-of-chemical-constitution-the-cell-wall-of-the-typical-plant-cell-is-composed-mainly-of-a-carbohydrate-substance-cellu-lose-which-is-the-special-component-of-all-quotwoodyquot-materials-but-the-pellicular-cover-ing-of-typical-animal-cells-is-composed-mainly-if-not-entirely-of-mucoprotein-substances-chap-4-extraneous-material-found-between-the-cells-of-certain-tissues-is-designated-generally-as-intercellular-matrix-in-some-ti-RDYX2N.jpg ". Principles of modern biology. Biology. 34 - The Cell The different physical properties of the cell wall and pellicle reflect a fundamental dif- ference of chemical constitution. The cell wall of the typical plant cell is composed mainly of a carbohydrate substance, cellu- lose, which is the special component of all "woody" materials. But the pellicular cover- ing of typical animal cells is composed mainly, if not entirely, of mucoprotein substances (Chap. 4). Extraneous material, found between the cells of certain tissues, is designated generally as intercellular matrix. In some ti Stock Photo")
RMRDYX2N–. Principles of modern biology. Biology. 34 - The Cell The different physical properties of the cell wall and pellicle reflect a fundamental dif- ference of chemical constitution. The cell wall of the typical plant cell is composed mainly of a carbohydrate substance, cellu- lose, which is the special component of all "woody" materials. But the pellicular cover- ing of typical animal cells is composed mainly, if not entirely, of mucoprotein substances (Chap. 4). Extraneous material, found between the cells of certain tissues, is designated generally as intercellular matrix. In some ti
RMRHJY9J–. Biology; the story of living things. Anthro^ bacillus^ As to shapes, their name is legion. A typical cell might be thought of as a spherical or ovoid body, but we find them cubical, flat, thread- like, spindle-shaped, columnar, or irregular in outline. They are often modified by being com- pressed by other cells, but frequently if given opportunity will resume their original form when released from pressure. Structural differences exist between plant and animal cells, the chief of which is the cellulose wall, characteristic of plants, which gives such cells the rigidity and yet the flexibili
RMRE0B5F–. General physiology; an outline of the science of life. ELEMENTARY VITAL PHENOMENA 193 h. Indirect Cell-division By far the great majority of all animal- and plant-cells follow the mode of the so-called indirect or mitotic cell-division, in which the protoplasm is simply constricted, while the nucleus undergoes very remarkable and typical changes of great regularity. Different authors have distinguished different stages and have designated them by different names. Two phases in nuclear division can be. Please note that these images are extracted from scanned page images that may have been dig
RMRHMTDY–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 2. Camera lucida drawing of the outer surface of the carapace showing the typical arrangement of cells. The surface markings correspond to the cell boundaries. The pillars appear in no definite order.. need/e carapace wafcA glass FIG. 3. Diagrammatic section through an animal showing method of opera- tion. Injury to structures other than the carapace is avoided. of age of the animal, age of the wound, and temperature. These results will be discussed in relation to those secured by others for more complex structures in o
RMRJBDR8–. The cell in development and inheritance. Cells. 84 CELL-DIVISION A no less remarkable mode of spindle-formation, which is in a cer- tain way intermediate between the cormophyte-type and the usual animal type is described by Mead ('97, '98, i) in the first maturation- division of CJi(2toptenis. Here the completed amphiaster is of quite typical form, and the centrosomes persist for the following mitosis; yet Mead is convinced that the amphiaster is synthetically formed by the union of two separate asters and centrosomes (Fig. 150) which. Please note that these images are extracted from scanned
RMRN5WJ9–. Animal growth and development. Embryology; Growth; Biology; Growth; Embryology; Animals -- growth & development. What Is Development? Page THE CENTRAL PROBLEMS OF DEVELOPMENTAL BIOLOGY THE RELATIONSHIP OF DEVELOPMENTAL BIOLOGY TO OTHER BIOLOGICAL DISCIPLINES Contents The Life Cycle of the Single Cell Page 6 VARIETIES OF CELL DIVISION BIOCHEMICAL EVENTS IN THE CELL DIVISION CYCLE THE LIFE CYCLE OF A TYPICAL UNICELLULAR ORGANISM—YEAST THE LIFE CYCLE OF PARAMECIUM AURELIA PERSISTENT RHYTHMS IN GONYAULAX POLYHEDRA: HOW ORGANISMS TELL TIME THE LIFE CYCLE OF ACETABULARIA: MORPHOGENESIS IN A MI
RMRN4Y22–. Animal biology. Zoology; Biology. 446 METAZOAN PHYLA may be called a typical mammalian embryogeny the inner cell mass becomes separated into two portions. In the upper portion develops an amniotic cavity, while in the lower portion is formed an archenteron. The amniotic cavity is lined with ectoderm, the archenteron with ento- derm, and from the cells between is formed the mesoderm. From the archenteron a yolk sac develops, which, however, does not contain yolk. Now the development of the embryo proceeds in much the same manner as in the development of a meroblastic egg cell. The entoderm to
![. The cell in development and inheritance. Cells. GEOMETRICAL RELATIONS OF CLEAVAGE-FORMS }>^1> Sachs has shown in the most beautiful manner that all the above ideal types are closely approximated in nature, and Rauber has applied the same principle to the cleavage of animal-cells. The discoid or spheroid form is more or less nearly realized in the thalloid growths of. Fig. i68. — Geometrical relations of cleavage-planes in growing plant-tissues. [From Sachs, after various authors.] A. Flat ellipsoidal germ-disc of Melobesia (Rosanoff) ; nearly typical relation of eiiiptic periclines and Stock Photo](https://c8.alamy.com/comp/RJBBWB/the-cell-in-development-and-inheritance-cells-geometrical-relations-of-cleavage-forms-gt1gt-sachs-has-shown-in-the-most-beautiful-manner-that-all-the-above-ideal-types-are-closely-approximated-in-nature-and-rauber-has-applied-the-same-principle-to-the-cleavage-of-animal-cells-the-discoid-or-spheroid-form-is-more-or-less-nearly-realized-in-the-thalloid-growths-of-fig-i68-geometrical-relations-of-cleavage-planes-in-growing-plant-tissues-from-sachs-after-various-authors-a-flat-ellipsoidal-germ-disc-of-melobesia-rosanoff-nearly-typical-relation-of-eiiiptic-periclines-and-RJBBWB.jpg ". The cell in development and inheritance. Cells. GEOMETRICAL RELATIONS OF CLEAVAGE-FORMS }>^1> Sachs has shown in the most beautiful manner that all the above ideal types are closely approximated in nature, and Rauber has applied the same principle to the cleavage of animal-cells. The discoid or spheroid form is more or less nearly realized in the thalloid growths of. Fig. i68. — Geometrical relations of cleavage-planes in growing plant-tissues. [From Sachs, after various authors.] A. Flat ellipsoidal germ-disc of Melobesia (Rosanoff) ; nearly typical relation of eiiiptic periclines and Stock Photo")
RMRJBBWB–. The cell in development and inheritance. Cells. GEOMETRICAL RELATIONS OF CLEAVAGE-FORMS }>^1> Sachs has shown in the most beautiful manner that all the above ideal types are closely approximated in nature, and Rauber has applied the same principle to the cleavage of animal-cells. The discoid or spheroid form is more or less nearly realized in the thalloid growths of. Fig. i68. — Geometrical relations of cleavage-planes in growing plant-tissues. [From Sachs, after various authors.] A. Flat ellipsoidal germ-disc of Melobesia (Rosanoff) ; nearly typical relation of eiiiptic periclines and
![. The cell in development and inheritance. Cells. GEOMETRICAL RELATIONS OF CLEAVAGE-FORMS 363 Sachs has shown in the most beautiful manner that all the above ideal types are closely approximated in nature, and Rauber has applied the same principle to the cleavage of animal-cells. The discoid or spheroid form is more or less nearly realized in the thalloid growths of. Fig. 168. — Geometrical relations of cleavage-planes in growing plant-tissues. [From SACHS, after various authors.] A. Flat ellipsoidal germ-disc of Melobesia (Rosanoff) ; nearly typical relation of elliptic periclines and hyperbo Stock Photo](https://c8.alamy.com/comp/RJBBD1/the-cell-in-development-and-inheritance-cells-geometrical-relations-of-cleavage-forms-363-sachs-has-shown-in-the-most-beautiful-manner-that-all-the-above-ideal-types-are-closely-approximated-in-nature-and-rauber-has-applied-the-same-principle-to-the-cleavage-of-animal-cells-the-discoid-or-spheroid-form-is-more-or-less-nearly-realized-in-the-thalloid-growths-of-fig-168-geometrical-relations-of-cleavage-planes-in-growing-plant-tissues-from-sachs-after-various-authors-a-flat-ellipsoidal-germ-disc-of-melobesia-rosanoff-nearly-typical-relation-of-elliptic-periclines-and-hyperbo-RJBBD1.jpg ". The cell in development and inheritance. Cells. GEOMETRICAL RELATIONS OF CLEAVAGE-FORMS 363 Sachs has shown in the most beautiful manner that all the above ideal types are closely approximated in nature, and Rauber has applied the same principle to the cleavage of animal-cells. The discoid or spheroid form is more or less nearly realized in the thalloid growths of. Fig. 168. — Geometrical relations of cleavage-planes in growing plant-tissues. [From SACHS, after various authors.] A. Flat ellipsoidal germ-disc of Melobesia (Rosanoff) ; nearly typical relation of elliptic periclines and hyperbo Stock Photo")
RMRJBBD1–. The cell in development and inheritance. Cells. GEOMETRICAL RELATIONS OF CLEAVAGE-FORMS 363 Sachs has shown in the most beautiful manner that all the above ideal types are closely approximated in nature, and Rauber has applied the same principle to the cleavage of animal-cells. The discoid or spheroid form is more or less nearly realized in the thalloid growths of. Fig. 168. — Geometrical relations of cleavage-planes in growing plant-tissues. [From SACHS, after various authors.] A. Flat ellipsoidal germ-disc of Melobesia (Rosanoff) ; nearly typical relation of elliptic periclines and hyperbo
RMRGGH5Y–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Figure A is a diagrammatic representation of the four-cell stage of Liruax as seen from the animal pole, showing dorsal and ventral cross furrows. Figure B is the same of the eight-cell stage. This condition is not quite realized in Figure 21 (Plate III.), owing to the near proximity of the succeeding division, which restores the cross furrows approximately to the conditions of the four-cell stage. Thus, in the typical eight-cell stage of Limax the cross furrows correspond to those of the same stage of Nereis
RMRDXYAY–. Principles of modern biology. Biology. 128 - The Cell synthesis of the various organic components of its protoplasm, and the typical plant can live and grow indefinitely so long as these simple foods are available. But an animal cannot do this; an animal's food require- ments are on a higher level of complexity. Compared to plant cells, animal cells have more limited powers of synthesis, and animal metabolism cannot be maintained in the ab- sence of organic foods stub as preformed proteins (or amino acids), carbohydrates, lipids, and vitamins (Table 7-1). Animals generally are cjuite similar
RMRR26B0–. Adventures with animals and plants. Biology. Fig. 140 (above) All cells have three d'niicn- sions. In the animal cell as in the plant cell there are two kinds of protoplasju. What other parts does the plant cell have? Fig. 141 (right) Cell from root tip of Trades- cantia plant. What are the parts of this plant cell? Which parts are livijig? Which are life- less? Conipare this typical plant cell with the mouth lining cells of Figure 1^9. The nucleus of the cell. Cell bodies are of many different shapes but nuclei are all much alike in shape and structure. In many cells they lie near the cente
RMRR26B9–. Adventures with animals and plants. Biology. •Cell body (cyfop/asm)- Nucleus {nucleoplasm)- Animal. Fig. 140 (above) All cells have three d'niicn- sions. In the animal cell as in the plant cell there are two kinds of protoplasju. What other parts does the plant cell have? Fig. 141 (right) Cell from root tip of Trades- cantia plant. What are the parts of this plant cell? Which parts are livijig? Which are life- less? Conipare this typical plant cell with the mouth lining cells of Figure 1^9. The nucleus of the cell. Cell bodies are of many different shapes but nuclei are all much alike in sha
![. Botany all the year round; a practical text-book for schools. Botany. INTRODUCTION If 8, Definitions. — "Organ" is a general name for any part of a living thing, whether animal or vegetable, set apart to do a certain work, as the heart for pumping blood, the lungs for breathing, or the stem and leaves of a plant for conveying and digesting the sap. By "function" is meant the work or office that an organ has to perform.. I.—Typical cells: k,nu- cleus ; p, protoplasm; w, cell wall; s, sap. 9. The Cell. — In its strictly scientific sense this word is applied to the smallest Stock Photo](https://c8.alamy.com/comp/RE0TBC/botany-all-the-year-round-a-practical-text-book-for-schools-botany-introduction-if-8-definitions-quotorganquot-is-a-general-name-for-any-part-of-a-living-thing-whether-animal-or-vegetable-set-apart-to-do-a-certain-work-as-the-heart-for-pumping-blood-the-lungs-for-breathing-or-the-stem-and-leaves-of-a-plant-for-conveying-and-digesting-the-sap-by-quotfunctionquot-is-meant-the-work-or-office-that-an-organ-has-to-perform-itypical-cells-knu-cleus-p-protoplasm-w-cell-wall-s-sap-9-the-cell-in-its-strictly-scientific-sense-this-word-is-applied-to-the-smallest-RE0TBC.jpg ". Botany all the year round; a practical text-book for schools. Botany. INTRODUCTION If 8, Definitions. — "Organ" is a general name for any part of a living thing, whether animal or vegetable, set apart to do a certain work, as the heart for pumping blood, the lungs for breathing, or the stem and leaves of a plant for conveying and digesting the sap. By "function" is meant the work or office that an organ has to perform.. I.—Typical cells: k,nu- cleus ; p, protoplasm; w, cell wall; s, sap. 9. The Cell. — In its strictly scientific sense this word is applied to the smallest Stock Photo")
RMRE0TBC–. Botany all the year round; a practical text-book for schools. Botany. INTRODUCTION If 8, Definitions. — "Organ" is a general name for any part of a living thing, whether animal or vegetable, set apart to do a certain work, as the heart for pumping blood, the lungs for breathing, or the stem and leaves of a plant for conveying and digesting the sap. By "function" is meant the work or office that an organ has to perform.. I.—Typical cells: k,nu- cleus ; p, protoplasm; w, cell wall; s, sap. 9. The Cell. — In its strictly scientific sense this word is applied to the smallest
RMRE0H74–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. 31-2 PARASITES OF THE DOMESTIC ANIMALS imu'li Kii'iitiM' s|i('cializatinn in some tliaii in othoiy. While a nucleus is not easily deinonstiahle in cci-tain of the Piotozua, most have one or more (listinet nuclei, in this, as in other i-espects, jiossessina; the essential parts of a typical cell, Ameba.—A simple representative of the Protozoa is the Amelia (P^ia;. I(j8,) which may lie found in most any still water, mo
RMRGFACM–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure A is a diagrammatic representation of the four-cell stage of Li max as seen from the animal pole, showing dorsal and ventral cross furrows. Figure B is the same of the eight-cell stage. This condition is not quite realized in Figure 21 (Plate III.), owing to the near proximity of the succeeding division, which restores the cross furrows approximately to the conditions of the four-cell stage. Thus, in the typical eight-cell stage of Limax the cross fuiTows correspond to those of the same stage of Nereis (Wilson
RMRN5GGD–. Animal biology. Biology; Zoology; Physiology. Cell Division (Binary fission) An indefinite number of generations. Temporary Conjugation (Fertilization) Each cell fer- tilizes the other. Cell Division Cell Division (Period of re- construction) Each fertilized cell gives rise to typical animals. (Binary fission) An indefinite number of gen- erations, etc. B. Yolvox.. g.c Cell Division Cell Division Cell Division Permanent Cell Division (Colony for- (Asexual re- (Gamete for- Conjuga- (Colony forma- production) mation) tion tion) Germ cells (g.c.) Certain germ (Fertilization) Zygote develops giv
RMRN5HPA–. Animal biology. Zoology; Biology. 244 METAZOAN PHYLA are carried from the center to the effector cells is known as the efferent path. 281. Reflex Acts.—In a typical and ideally simple reflex act a receptor neuron situated in the hypodermis is stimulated from without (Fig. 152), the stimulus being received directly by the cell body or by a short den- drite. An afferent impulse follows the axon of this cell to a synapse in a central ganglion where it is passed to the dendrite of a motor neuron. This sends out an efferent impulse along its axon to a muscle cell, the effector, causing contractio
RMRN5PAR–. Animal biology. Zoology; Biology. Nuclear Asters membranes and Spjndle appear disappear Fig. 15.—Diagrams representing the steps in a typical mitosis. The steps numbered 1 to 4 represent the prophase, 1 being a resting cell. 5, the metaphase. 6, the anaphase. And 7 to 9, the telophase, 9 showing the two daughter resting cells. toward one central body and the second being pulled toward the other central body. As the two separating groups of chromosomes approach the central bodies these chromosomes become scattered about the respec- tive ends of the spindle in an irregular fashion. Then a seri
RMRN55YY–. Animal biology. Zoology; Biology. REFLEX ACTION 239 are carried from the center to the effector cells is known as the efferent path. 279. Reflex Acts.—In a typical and ideally simple reflex act a receptor neuron situated in the hypodermis is stimulated from without (Fig. 142), the stimulus being received directly by the cell body or by a short den- drite. An afferent impulse follows the axon of this cell to a synapse in a central ganglion where it is passed to the dendrite of an adjustor neuron. This sends out an efferent impulse along its axon to a nuiscle cell, the effector, causing contra
RMRN5RN2–. Animal biology. Zoology; Biology. Nuclear Asters membranes and Spindle appear disappear Fig. 12.—Diagrams representing the steps in a typical mitosis. The steps numbered 1 to 4 represent the prophase, 1 being a resting cell; 5, the metaphase; 6, the anaphase; and 7 to 9, the telophase, 9 showing the two daughter resting cells. begin to separate, one moving along the rays of the spindle toward one central body and the second moving toward the other central body. As the two separating groups of chromosomes approach the central bodies these chromosomes become scattered about the respective ends
![. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. A Fig. 147. A, Diagram of a firimitive sensory neurone. B, Typical vertebrate sensory neurone. The human olfactory neurones possess a peripheral cell body and resemble the type shown in A. Human taste neurones possess a centrally located cell body and resemble the type shown in B. After Cajar from Fulton.'"' are less numerous and are scattered ox'cr the front, upper surface. These usually contain taste buds. (3) Circumvallate papillae, which are seven to ten in number in man, are larger than the two previou Stock Photo](https://c8.alamy.com/comp/REFD0W/comparative-animal-physiology-physiology-comparative-physiology-comparative-a-fig-147-a-diagram-of-a-firimitive-sensory-neurone-b-typical-vertebrate-sensory-neurone-the-human-olfactory-neurones-possess-a-peripheral-cell-body-and-resemble-the-type-shown-in-a-human-taste-neurones-possess-a-centrally-located-cell-body-and-resemble-the-type-shown-in-b-after-cajar-from-fultonquot-are-less-numerous-and-are-scattered-oxcr-the-front-upper-surface-these-usually-contain-taste-buds-3-circumvallate-papillae-which-are-seven-to-ten-in-number-in-man-are-larger-than-the-two-previou-REFD0W.jpg ". Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. A Fig. 147. A, Diagram of a firimitive sensory neurone. B, Typical vertebrate sensory neurone. The human olfactory neurones possess a peripheral cell body and resemble the type shown in A. Human taste neurones possess a centrally located cell body and resemble the type shown in B. After Cajar from Fulton.'"' are less numerous and are scattered ox'cr the front, upper surface. These usually contain taste buds. (3) Circumvallate papillae, which are seven to ten in number in man, are larger than the two previou Stock Photo")
RMREFD0W–. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. A Fig. 147. A, Diagram of a firimitive sensory neurone. B, Typical vertebrate sensory neurone. The human olfactory neurones possess a peripheral cell body and resemble the type shown in A. Human taste neurones possess a centrally located cell body and resemble the type shown in B. After Cajar from Fulton.'"' are less numerous and are scattered ox'cr the front, upper surface. These usually contain taste buds. (3) Circumvallate papillae, which are seven to ten in number in man, are larger than the two previou
RMRHMHX4–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 02 F. B. BANG AND H. S. SHIN rr LJ 5 2 I 0 — 4 3 3 18 No R cells Lesions Lesions 25 Elongated R cells K -« R cell secretion. DAYS AFTER EXPOSURE FIGURE 2. Course of disease symptoms and cellular reaction in typical pox disease induced by scarification and exposure. Each chart represents an individually numbered animal which had been scarified and exposed to a previously infected animal. The time of development of lesions was roughly correlated with the appearance of the lysin, but both varied by a few days. Animal #27 illust
![. South African botany. Botany. CHAPTEE II. THE CELL. 10. The Cell.—The whole of the tissues of a plant are composed of units called Cells (fig. 10). These re- semble the cells of animal tissue in many respects, but n-. FiG. 10.—Typical Cells. n. Nucleus, v. Vacuole, cxj. Cytoplasm. differ from them in that they are surrounded by a firm wall made of a carbohydrate called Cellulose. A typical eel] is found to contain a mass of Cytoplasm, a fluid-like substance consisting of a clear ground sub- 18. Please note that these images are extracted from scanned page images that may have been digitally Stock Photo](https://c8.alamy.com/comp/RE1KMT/south-african-botany-botany-chaptee-ii-the-cell-10-the-cellthe-whole-of-the-tissues-of-a-plant-are-composed-of-units-called-cells-fig-10-these-re-semble-the-cells-of-animal-tissue-in-many-respects-but-n-fig-10typical-cells-n-nucleus-v-vacuole-cxj-cytoplasm-differ-from-them-in-that-they-are-surrounded-by-a-firm-wall-made-of-a-carbohydrate-called-cellulose-a-typical-eel-is-found-to-contain-a-mass-of-cytoplasm-a-fluid-like-substance-consisting-of-a-clear-ground-sub-18-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-RE1KMT.jpg ". South African botany. Botany. CHAPTEE II. THE CELL. 10. The Cell.—The whole of the tissues of a plant are composed of units called Cells (fig. 10). These re- semble the cells of animal tissue in many respects, but n-. FiG. 10.—Typical Cells. n. Nucleus, v. Vacuole, cxj. Cytoplasm. differ from them in that they are surrounded by a firm wall made of a carbohydrate called Cellulose. A typical eel] is found to contain a mass of Cytoplasm, a fluid-like substance consisting of a clear ground sub- 18. Please note that these images are extracted from scanned page images that may have been digitally Stock Photo")
RMRE1KMT–. South African botany. Botany. CHAPTEE II. THE CELL. 10. The Cell.—The whole of the tissues of a plant are composed of units called Cells (fig. 10). These re- semble the cells of animal tissue in many respects, but n-. FiG. 10.—Typical Cells. n. Nucleus, v. Vacuole, cxj. Cytoplasm. differ from them in that they are surrounded by a firm wall made of a carbohydrate called Cellulose. A typical eel] is found to contain a mass of Cytoplasm, a fluid-like substance consisting of a clear ground sub- 18. Please note that these images are extracted from scanned page images that may have been digitally
RMRHN46C–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 8 1.0pm 10 1.0pm FIGURE 6. Lysosomal vesicles containing more condensed or electron-dense material surrounded by less dense matrices. Denser material often appears in rod-like profiles. This cell was taken from an animal 60 inin after bacteria were injected into the coelom. Lysosomal vesicles are similar in cells of untreated animals. X 24,700. FIGURE 7. Dense vesicles containing clear regions in the cytoplasm. The clear regions contain very dense material (cj. more typical lysosomal vesicles next to them and in Fig. 6)..
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 6. Typical spreading sequence for living cells in contact with glass substratum (phase contrast), (a) One min after removal from animal, in contact with glass; cell still elliptical and flat, (b) Same cell after 5 min, becoming amorphous and "spiky", (c) Same cell after 10 min, showing extensive spreading such that internal organelles start to become visible. The three photographs are at the same magnification, with mag. bars as in (a). FIGURE 7. Three cells allowed to spread for 12 min, before (a) and after Stock Photo](https://c8.alamy.com/comp/RHN3T9/the-biological-bulletin-biology-zoology-biology-marine-biology-figure-6-typical-spreading-sequence-for-living-cells-in-contact-with-glass-substratum-phase-contrast-a-one-min-after-removal-from-animal-in-contact-with-glass-cell-still-elliptical-and-flat-b-same-cell-after-5-min-becoming-amorphous-and-quotspikyquot-c-same-cell-after-10-min-showing-extensive-spreading-such-that-internal-organelles-start-to-become-visible-the-three-photographs-are-at-the-same-magnification-with-mag-bars-as-in-a-figure-7-three-cells-allowed-to-spread-for-12-min-before-a-and-after-RHN3T9.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 6. Typical spreading sequence for living cells in contact with glass substratum (phase contrast), (a) One min after removal from animal, in contact with glass; cell still elliptical and flat, (b) Same cell after 5 min, becoming amorphous and "spiky", (c) Same cell after 10 min, showing extensive spreading such that internal organelles start to become visible. The three photographs are at the same magnification, with mag. bars as in (a). FIGURE 7. Three cells allowed to spread for 12 min, before (a) and after Stock Photo")
RMRHN3T9–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 6. Typical spreading sequence for living cells in contact with glass substratum (phase contrast), (a) One min after removal from animal, in contact with glass; cell still elliptical and flat, (b) Same cell after 5 min, becoming amorphous and "spiky", (c) Same cell after 10 min, showing extensive spreading such that internal organelles start to become visible. The three photographs are at the same magnification, with mag. bars as in (a). FIGURE 7. Three cells allowed to spread for 12 min, before (a) and after
RMRN5ERW–. Animal biology. Biology; Zoology; Physiology. ABC Fig. 177A. - Photographs of early stages in the development of the egg of the Rabbit. A, two-cell stage, 24 hours after fertilization, in thick surround- ing membrane (zona pellucida); B, four-cell stage, 29 hours; C, eight-cell stage, 32 hours. Highly magnified. (After Streeter.) Finally, the eggs of typical Mammals, including Man, though not provided with so large an amount of yolk because food is. A B Fig. 177B. —Human embryos. A, one month old (6.7 mm.), showing arm and leg buds, caudal end, umbilical cord, heart, gill slits, olfactory pi
RMRN5TMP–. Animal hormones; a comparative survey. Hormones. Fig. 2-1 (5^) Fig. 2-1. Cells derived from the nervous system, (a) Typical motor nerve cell with branched dendrites (de), cell body with Nissl bodies (n.b.) in cytoplasm, nucleus (nu) w4th nucleolus, and long axon (ax) branching to motor end-plates (mot.e.p.) on muscle fibres (m). (b—d) Neurosecretory cells with stainable granules (gr): (b) with dendrites, from supraoptic nucleus of dog (after Scharrer and Scharrer, 1954ft); (c) wdthout dendrites, the blunt axon is swollen with secretory granules that pass to a blood vessel (b.v.) from gang- l
![. Animal biology. Zoology; Biology. Mouth Uasfax Sfomach Yolk gr/ar!cf± Ovary Ov/c/ucf Contfacf/'/e ves/c/e Foot. -Dor^(^^ fee/er Eye spof Musc/es F/a/ve cell Cuf/cu/a Fxcrefory c?luct Jnfesf/yje C/oaca C/oaca/ openm^ •Toes Fig. 93. Fig. 94. Fig. 93.—Philodina roseola Ehrenberg. Not a typical rotifer, but one of the first types studied by microscopists; the ciliated disks on the head of the organism suggested the name rotifer. It both creeps and swims. A common American species. {From Jennings, in Ward and Whipple, "Fresh-water Biology,'' after Weber, by courtesy of John Wiley & Sons, Stock Photo](https://c8.alamy.com/comp/RN5MHT/animal-biology-zoology-biology-mouth-uasfax-sfomach-yolk-grar!cf-ovary-ovcucf-contfacfe-vesce-foot-dor-feeer-eye-spof-musces-fave-cell-cufcua-fxcrefory-cluct-jnfesfyje-coaca-coaca-openm-toes-fig-93-fig-94-fig-93philodina-roseola-ehrenberg-not-a-typical-rotifer-but-one-of-the-first-types-studied-by-microscopists-the-ciliated-disks-on-the-head-of-the-organism-suggested-the-name-rotifer-it-both-creeps-and-swims-a-common-american-species-from-jennings-in-ward-and-whipple-quotfresh-water-biology-after-weber-by-courtesy-of-john-wiley-amp-sons-RN5MHT.jpg ". Animal biology. Zoology; Biology. Mouth Uasfax Sfomach Yolk gr/ar!cf± Ovary Ov/c/ucf Contfacf/'/e ves/c/e Foot. -Dor^(^^ fee/er Eye spof Musc/es F/a/ve cell Cuf/cu/a Fxcrefory c?luct Jnfesf/yje C/oaca C/oaca/ openm^ •Toes Fig. 93. Fig. 94. Fig. 93.—Philodina roseola Ehrenberg. Not a typical rotifer, but one of the first types studied by microscopists; the ciliated disks on the head of the organism suggested the name rotifer. It both creeps and swims. A common American species. {From Jennings, in Ward and Whipple, "Fresh-water Biology,'' after Weber, by courtesy of John Wiley & Sons, Stock Photo")
RMRN5MHT–. Animal biology. Zoology; Biology. Mouth Uasfax Sfomach Yolk gr/ar!cf± Ovary Ov/c/ucf Contfacf/'/e ves/c/e Foot. -Dor^(^^ fee/er Eye spof Musc/es F/a/ve cell Cuf/cu/a Fxcrefory c?luct Jnfesf/yje C/oaca C/oaca/ openm^ •Toes Fig. 93. Fig. 94. Fig. 93.—Philodina roseola Ehrenberg. Not a typical rotifer, but one of the first types studied by microscopists; the ciliated disks on the head of the organism suggested the name rotifer. It both creeps and swims. A common American species. {From Jennings, in Ward and Whipple, "Fresh-water Biology,'' after Weber, by courtesy of John Wiley & Sons,
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