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...Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division is usually a small segment of a larger cell cycle. This type of cell division in eukaryotes is known as mitosis, and leaves the daughter cell capable of dividing again. The corresponding sort of cell division in prokaryotes is known as binary fission. In another type of cell division present only in eukaryotes, called meiosis, a cell is permanently transformed into a gamete and cannot divide again until fertilization.For simple unicellular organismsSingle cell organisms. See discussion within lead of the article on microorganism. such as the amoeba, one cell division is equivalent to reproduction-- an entire new organism is created. On a larger scale, mitotic cell division can create progeny from multicellular organisms, such as plants that grow from cuttings. Cell division also enables asexually reproducing organisms to develop from the one-celled zygote, which itself was produced by cell division from gametes. And after growth, cell division allows for continual construction and repair of the organism. A human being's body experiences about 10,000 trillion cell divisions in a lifetime.. Read full entry
This entry is from Wikipedia,the leading user-contributed encyclopedia.It may not have been reviewed by professional editors(See full disclaimer)
- Recombinant Human Cdc34
- Cell Division Cycle 34, UBC3, Order Online, Academic Discounts.
- www.prospecbio.com
- 1.Cell division - Wikipedia, the free encyclopedia
- The corresponding sort of cell division in prokaryotes is known as binary fission. ... Cell division also enables sexually reproducing organisms to develop from the ...
- http://en.wikipedia.org/wiki/C
ell_division
- 2.Cell Cycle: Cell Division : Biology: SparkNotes: 101s
- symfony project ... Without the controlled timing of cell division, an organism would be a shapeless ... If the DNA is intact, cell division proceeds. ...
- http://www.sparknotes.com/101/
biology/cell_division
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cell division?
When you put a piece of plant
tissue, such as leaf, in
glucose. it can capable of
cell division and grow to a
new plant. But leaf isn't
really a part that is active
in cell division, right? Also,
isn't the part which actviate
in cell division is in shoot
tip and root tip?
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plants are capable of differentiation or potency which most animal cells are not. this is the ability to regenerate a clone from any type of plant cell. in animals, only stem cells have this capability. putting some leaf cells in glucose shouldn't normally produce an entire new plant (though some plants like kalanchoe(christmas or easter plant) readily reproduce by dropping small leaf segments. It is primarily dependent u[pon the type of plant, its mode of asexual reproduction that would produce these kinds of results. Normally the most active region of the plant would be in its root tips. |
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What is one of the differences What is one of the differences
between cell division in plant
cells and cell division in
animal cells?
A) Plant cells do not use a
mitotic spindle to separate
chromosomes.
B) Plant cells separate
chromosomes by attachment to
the plasma membrane.
C) In a plant cell, there is
no nucleus around the
chromosomes.
D) There is no DNA replication
before cell division in plant
cells.
E) Plant cells separate by
growth of a cell wall and
membrane in the middle of the
cell.
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E is the correct answers. After the last phase of mitosis, animal cells undergo cytokinesis - a pinching of the cytoplasm and cell membrane into two separate entities. However, plant cells simply grow a new wall in the middle of the cell once chromosomes and organelles have separated from the metaphase plate. |
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How do blood cells undergo Blood cells loose their
nucleus (contains DNA for cell
division) as they mature. How
do they undergo cell division
to make more?
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Blood cells do not have nuclei and cannot undergo meiosis. RBC's are also unique due to their shape, allowing for maximum surface area for an increased ability to carry and deliver oxygen. Blood cell production is known as erythropoeisis, a series of stages where a pluripotent stem cell transforms into a colony forming-unit (CFU), to an erythroblast, reticulocyte and finally an erythrocyte (red blood cell). Production of more RBC's is dependent upon a number of factors. For example if one becomes hypoxic (low o2 sat), the liver and kidneys secrete the hormone, erythropoietin (EPO) to stimulate red bone marrow which accelerates erythropoiesis and increases red blood cell count and results in increased O2 transport by the RBCs. |
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