Related topics: cells
Cell division
hideCell division is a process by which a cell, called the parent cell, divides into two or more cells, called 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 organisms 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 sexually 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.
The primary concern of cell division is the maintenance of the original cell's genome. Before division can occur, the genomic information which is stored in chromosomes must be replicated, and the duplicated genome separated cleanly between cells. A great deal of cellular infrastructure is involved in keeping genomic information consistent between "generations".
For more information about Cell division, read the full article at
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News tagged with cell division
Long-term physical activity has an anti-aging effect at the cellular level
Nov 30, 2009 |
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Intensive exercise prevented shortening of telomeres, a protective effect against aging of the cardiovascular system, according to research reported in Circulation: Journal of the American Heart Association.
New international study targets rare cancer bringing hope for advanced thymic cancer patients
Dec 08, 2009 |
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Dec. 8, 2009 — The Translational Genomics Research Institute (TGen) and Scottsdale Healthcare are testing a new drug specifically for thymic cancer based on early promising results at Scottsdale Healthcare.
Search results for cell division
Cholesterol-lowering drugs also may protect stem cell transplant patients from GVHD
Dec 04, 2009 |
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Cholesterol-lowering drugs known as statins are among the most prescribed medicines in the U.S. Now a new study by researchers at Fred Hutchinson Cancer Research Center indicates that statins may protect stem cell transplant ...
Highlight: Biofunctionalized magnetic-vortex microdiscs
Nanotechnology / Nanomaterials
Dec 09, 2009 |
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Users from Argonne's Materials Science Division and University of Chicago's Pritzker School of Medicine, working collaboratively on a user science project with CNM's Nanobio Interfaces Group, have discovered ...
Researchers demonstrate that stem cells can be engineered to kill HIV
Medicine & Health / HIV & AIDS
Dec 08, 2009 |
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(PhysOrg.com) -- UCLA AIDS Institute researchers have for the first time demonstrated that human blood stem cells can be engineered to target and kill HIV-infected cells.
Researchers prove key cancer theory
Dec 07, 2009 |
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Mayo Clinic researchers have proven the longstanding theory that changes in the number of whole chromosomes -- called aneuploidy -- can cause cancer by eliminating tumor suppressor genes. Their findings, which appear in the ...
New insight into selective binding properties of infectious HIV
Medicine & Health / HIV & AIDS
Dec 15, 2009 |
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Free infectious HIV-1 is widely thought to be the major form of the virus in the blood of infected persons. U.S. Military HIV Research Program (MHRP) researchers, however, have demonstrated that essentially all of the infectious ...
Pores finding reveals targets for cancer and degenerative disease
Dec 18, 2009 |
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Walter and Eliza Hall Institute scientists have identified a key step in the biological process of programmed cell death, also called apoptosis.
Stick and slide: Computer simulation advances understanding of molecular motors
Dec 02, 2009 |
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A new study reveals how molecular motors that power important subcellular movements can generate cyclical motion. The research, published by Cell Press in the December issue of the Biophysical Journal, opens a new door t ...
Discovery makes brain tumor cells more responsive to radiation
Dec 02, 2009 |
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Duke University Medical Center researchers have figured out how stem cells in the malignant brain cancer glioma may be better able to resist radiation therapy. And using a drug to block a particular signaling pathway in these ...
Watermelon: Fruit on the Fast Track
Dec 14, 2009 |
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(PhysOrg.com) -- Agricultural Research Service (ARS) scientists are studying how watermelons grow from tiny flowers to plus-size, market-ready produce in only five weeks. Their findings have resulted in the ...
Measuring and modeling blood flow in malaria
Nov 23, 2009 |
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When people have malaria, they are infected with Plasmodium parasites, which enter the body from the saliva of a mosquito, infect cells in the liver, and then spread to red blood cells. Inside the blood cells, the parasites ...
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