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Mitochondria in Lymphocytes of Normal and
Mitochondria in Lymphocytes of Normal and

... occasionally fail to take the dye, while some fading of the stain occurs." Although Wiseman's paper is the only one dealing with the lymphocyte in particular, many others have shown that large numbers of mitochondria are present in young blood cells (2, 5). As part of a comparative cytological study ...
Preview Sample 1
Preview Sample 1

... Slides, transparencies, and electron micrographs are very useful for pointing out the major features of cells and organelles. These can be obtained from Carolina Biological Supply Company, Burlington, NC. Numerous WWW resources are also available such as http://www.cellbio.com. ...
Functions of the exocyst complex in secretion and cell wall biogenesis
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... errors caused by imperfect computational assembling at regions of tandem duplications. Gene duplication events are common in plant evolution and that also applies for the genes coding for subunits of the exocyst. Initiated by puzzling outputs from genetic analysis of sec10 exocyst subunit mutants, w ...
The Cell
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A sejt - SotePedia
A sejt - SotePedia

... Capture/Tethering step, the protrusions on the leukocyte surface are meant to represent the microvilli that bear L-selectin or VLA-4. The lightning bolt at the Activation step represents the triggering of inside-out activation of leukocyte integrins by signals from the endothelium and endothelial su ...
The Cell - MDC Faculty Home Pages
The Cell - MDC Faculty Home Pages

... between plant cells, the membrane plasmodesmata, allow for the cell walls movement of materials among cells. Thanks to the cytoplasm plasmodesmata channels, the cytoplasm of one cell is continuous with the cytoplasm of the next; the plant as a whole can be thought of as having a single complement of ...
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документ

... do they lose energy when they are not used for a long time? Well I tried my best to find the best answers for these questions and a little more. Battery, also called an electric cell, is a device that converts chemical energy into electricity. All batteries contain an electrolyte, a positive electro ...
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Plant or Animal Cell Project and Story/Poem/Song Names:
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July 8, 2008 15:1 WSPC/INSTRUCTION FILE GWAL EVOLUTION
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... divisions, a metaphor for the way such break occurs in insect embryogenesis [3]. Non-diffusible factors include three factors which provide historic/temporal information: a time signal (increases linearly from 0 and reaches 1 when the maximum time for the development is exhausted), a generation coun ...
Cell Membrane - Fort Bend ISD
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Immune System Overview - ADAM Interactive Anatomy
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... The answer to these questions is clear once you know how a cell functions. To carry out life processes, a cell must be able to quickly pass substances into and out of the cell. For example, it must be able to pass nutrients and oxygen into the cell and waste products out of the cell. Anything that e ...
Immune System Overview - ADAM Interactive Anatomy
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... A major difference between prokaryotes and eukaryotes is that eukaryotes have A. DNA strung out as much longer double—stranded molecules. B. many more small, circular DNA molecules. c. more DNA but smaller cells because of less protein and lipid. D. much larger quantities of DNA. E. several DNA mole ...
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Symplasmic fields in the tunica of the shoot
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... sustain its dynamic organization is a key question in plant morphogenesis, but it has received surprisingly little attention. In animal systems the ability of fragments to produce copies of the whole, demonstrated during early embryogenesis, is due to a morphogenetic field, i.e. ‘an area where the c ...
Symplasmic fields in the tunica of the shoot
Symplasmic fields in the tunica of the shoot

... sustain its dynamic organization is a key question in plant morphogenesis, but it has received surprisingly little attention. In animal systems the ability of fragments to produce copies of the whole, demonstrated during early embryogenesis, is due to a morphogenetic field, i.e. ‘an area where the c ...
Algae are photosynthetic protists [1].
Algae are photosynthetic protists [1].

... side ways, or upside down homework. Please use the scanner in the school’s media lab if one is not at your disposal and keep completed guides organized in your binder to use as study and review tools. READ FOR UNDERSTANDING and not merely to complete an assignment. Though all the answers are in your ...
cell biology learning targets
cell biology learning targets

... 7. I can i.d. the parts of a bacterial cell. 8. List the characteristics of bacteria. 9. Explain the importance of bacteria to human and describe how they can be helpful or harmful. 10. i.d. the two major groups of prokaryotes? 11. Explain how gram positive and gram negative bacteria different? 12. ...
cell cycle phase expansion in nitrogen
cell cycle phase expansion in nitrogen

... experiments a spontaneous homozygous diploid derivative of strain 4008 was used . Strain 4008 contains the temperaturesensitive cdc7-4 allele (7) as well as the markers found in A364A; the permissive temperature is 23°C. Both strains were supplied by L. H. Hartwell. The medium used for all experimen ...
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Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
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