LAST CELL DIVISION QUESTION XD! Please a lil help?
359158
The cells double every 12 hours.  In three days (ie 72hrs), the cells will go through 6 doublings (72/12=6).  \n\n0 hr = 2 cells\n12hr = 4 cells\n24hr= 8 cells\n36hr = 16 cells\n48hr = 32 cells\n60hr = 64 cells\n72hr = 128 cells\n\nThus you will have 128 cells after 3 days.
780451
The cell cycle, or cell-division cycle (CDC), is the series of events in a eukaryotic cell between one cell division and the next. Thus, it is the process by which a single-cell fertilized egg develops into a mature organism and the process by which hair, skin, blood cells, and some internal organs are renewed. A specialized form of cell division is responsible for cellular differentiation during embryogenesis and morphogenesis, as well as for the maintenance of stem cells during adult life.\n\nThe cell cycle consists of four distinct phases: G1 phase, S phase, G2 phase (collectively known as interphase) and M phase. M phase is itself composed of two tightly coupled processes: mitosis, in which the cell's chromosomes are divided between the two daughter cells, and cytokinesis, in which the cell's cytoplasm physically divides. Cells that have temporarily or reversibly stopped dividing are said to have entered a state of quiescence called G0 phase, while cells that have permanently stopped dividing due to age or accumulated DNA damage are said to be senescent. Some cell types in mature organisms, such as parenchymal cells of the liver and kidney, enter the G0 phase semi-permanently and can only be induced to begin dividing again under very specific circumstances; other types, such as epithelial cells, continue to divide throughout an organism's life.\n\nThe molecular events that control the cell cycle are ordered and directional; that is, each process occurs in a sequential fashion and it is impossible to "reverse" the cycle. There are two key classes of regulatory molecules that determine a cell's progress through the cell cycle: cyclins and cyclin-dependent kinases. Leland H. Hartwell, R. Timothy Hunt, and Paul M. Nurse won the 2001 Nobel Prize in Physiology or Medicine for their discovery of these central molecules in the regulation of the cell cycle.\n\nPhases of the cell cycle\n\n Schematic of the cell cycle. I=Interphase, M=Mitosis. The duration of mitosis in relation to the other phases has\nbeen exaggerated in this diagramAlthough the various stages of interphase are not usually morphologically distinguishable, each phase of the cell cycle has a distinct set of specialized biochemical processes that prepare the cell for entry into the next stage. It should be remembered that, throughout interphase, the cell carries out its normal metabolic activities and is actively engaging in transcription and translation of its genome.\n\nIn G1 phase, the cell carries on its usual metabolic activities while preparing to duplicate its DNA. These preparations often include growing by increasing the amount of cytoplasm and the number of important organelles such as mitochondria. (This is particularly important in organisms and cell types that divide their cytoplasm unevenly, as in budding yeast.) In G1 a diploid cell (such as a human cell) has a complement of 2N chromosomes, where N is the gene copy number; in sexually reproducing organisms this amounts to one chromosome inherited from each parent. The actual quantity of DNA is described as 2c, where the "c" value is measured in picograms and 1c is equal to the quantity of DNA in a single haploid genome. The end of G1 is demarcated by a "point of no return" beyond which the cell is committed to dividing; in yeast this is called START and in multicellular eukaryotes it is termed the restriction point. \nIn S phase, the cell duplicates its DNA. \nIn G2 phase, the cell continues with growth and metabolism in preparation for undergoing mitosis. In this quantity of DNA within the cell has increased to 4c, but the cell is still considered diploid. \nIn M phase the cell segregates its chromosomes so that both daughter cells receive a total complement of 2N. The four stages of mitosis - prophase, metaphase, anaphase, and telophase - also progress in a sequential and directional fashion, like the cell cycle as a whole. Telophase, the final stage of mi
79127
The process of spermatogenesis involves multiple steps.\nwithin the wall of the seminiferous tubules, spermatigonium will split via mitosis. Each complete spermatogonium, aka primary spermatocyte will undergo meiosis. So one cell undergoes meiosis and produces 2 secondary spermatocytes. But the process is not yet comlete. These secondary spermatocytes must undergo a second meiotic division resulting in 4 spermatids which mature into sperm. \n\nSo for every starter cell, 4 sperms cells are formed at the end of this process.
814544
Meiosis is a completely different process from mitosis.\n\nI should stop doing other people's homework...\n\nMeiosis ends with a different amount of cells, and the cells as a result of meiosis only have 1/2 of the chromosomes of the original cell, where in mitosis, the daughter cells have the same amount of chromosomes.\n\nIn meiosis, there are two divisions. \n\nMeiosis occurs only in reproductive cells. For example, in humans, sperm has 23chromosomes and eggs have 23 chromosomes, a normal human cell has 46, which is why it takes two reproductive cells to create a living thing.\n\nI could go on and on, but I have to return to my own work.
202968
If the rest of your question was: "What is the diploid number of chromosomes after synthesis?" Than the answer is still 12 because a haploid cell won't form until mitosis. If you clarify your question, you can get better answers. I'll come back to check.
759610
Mitosis:\n\nOccurs during cell division of somatic cells\n\nA full set of chromosomes is passed on to each daughter cell. This s the diploid number of chromosomess\n\nthe choromosomes and genes in each daughter cell are identical.\n\nIf new organisms are produced by mitosis is asexual reproduction they will all resemble each other and their parents. they are said to form a 'clone'.\n\n\nMeiosis;\n\nOccurs in the final stages of cell division leading to production of gametes.\n\nOnly half the chromosomes are passed on to the daughter cells, i.e. the haploid number of chromosomes.\n\nThe homologous chromosomes and their genes are radomly assorted between the gametes.\n\nNew organisms produced by meiosis in sexual reproduction will show variations from each other and form their own parents.
136236
Hi there, \n\nMany types of bacteria undergo cell division by a procedure called 'Binary Fission'\nYeast does not undergo cell division, however, it reproduces through 'Budding'\n\nHope this helps. If not, I'd be glad to assist you further. Bye!!\n\nrule wid style n luv@vinny
104817
http://www.cellsalive.com/cell_cycle.htm\n\nThis is a neat interactive website! Check it out and let me know how it works for you!
68932
1.The genetic purpose of mitosis is to produce two daughter cells that are genetically identical to the parent cell.\n\n2.The sequence of stages that a cell passes through between one cell division and the next. The cell cycle can be divided into four main stages: the M phase, when nuclear and cytoplasmic division occurs; the G1 phase; the S phase in which DNA replication occurs; and the G2 phase.\n\n3.The cell cycle is an ordered set of events, culminating in cell growth and division into two daughter cells. Non-dividing cells not considered to be in the cell cycle. The stages, pictured to the left, are G1-S-G2-M. The G1 stage stands for "GAP 1". The S stage stands for "Synthesis". This is the stage when DNA replication occurs. The G2 stage stands for "GAP 2". The M stage stands for "mitosis", and is when nuclear (chromosomes separate) and cytoplasmic (cytokinesis) division occur. Mitosis is further divided into 4 phases.\n\npheeww.. it's like being back in school. Is hould get 10 points for this effort :-)
131890
Cytokinesis is the final stage of cell reproduction; it is the division of the cytoplasm into approximately equal halves, resulting in a roughly equal distribution of organelles in each of the daughter cells. Cytokinesis usually begins in telophase. We will discuss cytokinesis separately for organisms which do not have a cell wall (mostly heterotrophs) and those which do have a cell wall (generally autotrophs).\n\nFor a cell without a cell wall, cytokinesis begins with the pinching inward of the cell membrane caused by the action of a ring of special contractile proteins called actin and myosin. The pinching inward forms a deep grove, often called the cleavage furrow. Eventually, the opposite sides of the furrow meet and the cell splits into two new daughter cells.\n\nWhereas cytokinesis in cells lacking a cell wall occurs through a pinching inward, organisms with a cell wall undergo a process through which a so-called cell plate is built from the middle of the cell outward to the membrane. Vesicles from the Golgi bodies flatten and fuse in the center of the cell, forming the cell plate, which elongates toward the cell membrane as more vesicle are added. When the cell plate reaches the cell membrane, the parent cell is effectively separated into two new daughter cells, which then proceed to build a cell wall along the cell plate.
726740
150 sperm cells....\nbecause each secondary spermatocyte shall become a spermatid each...and each spermatid produces a sperm cell.... therefore, a sec. spermatocyte only produces a single sperm cell...
740160
1- Meiosis happens in stem cells that give rise to gametes (sex cells). \nMitosis happens in all other cells.\nIn women every month only one stem cell goes through meiosis forming 4 haploid cells. In men many cells go through meiosis everyday.\nEvery other cell in body goes through mitosis in a daily basis to replace old and dead cell.\n2- Before cell replication starts.\n3- At the end of the prophase (in case of meiosis, end of the prophase 1)\n4- Mitosis: diploid cells; Meiosis: haploid cells\n5- Every thing but cell division: the cell obtain nutrients and when it gets close to cell division, it will duplicate its DNA and other organelles.
273648
Unfortunately there isnt any average cell-as said before, there is variation from minutes, in the case of some immune and germ cells, to never in the case of most neurons.  But, to give you a way to answer your homework, you can say a hypothetical cell takes 24 hours to divide-there are quite a few cell types that take about this long, so you would be safe choosing this time.
944456
1.  Look up mitosis on wikipedia.  The explanation is too long to include here.\n2. See above.\n3. Oxygen.\n4. 1/46 = 2.2%.\n5. The number they are looking for is 16.
79598
Both previous answers are inaccurate.\n\nMitosis is sometimes called growth division. In plants and animals new cells are made continually. Mitosis results in two new cells identical genetically to the original which divided.\nWe are diploid animals which have 23 pairs of chromosomes. After mitosis both cells still have 23 pairs of chromosomes.\n\nMeiosis is a division which produces sex cells (sperm or ova). After division is complete, each sex cell has half the number of chromosomes; it is haploid. So instead of having 23 pairs the sex cells will have 23 chromosomes - one of each type of chromosome.
841798
Any mitotic division REQUIRES cytokinesis.  It's the split of the cytoplasm and it starts in telophase, the last part of mitosis.
606518
one cell divides to two cell and the new cells grow in size and the process repeats itself