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cell division (key points (before a cell can divide it needs to grow,…
cell division
key points
before a cell can divide it needs to grow, replicate the DNA to form two copies of each chromosome and increase the number of sub-cellular structures. in mitosis one set of chromosomes is pulled to each end of the cell and the nucleus divides. finally, the cytoplasm and cell membrane divide to form two identical cells
during the cell cycle the genetic material is doubled. it then divides into 2 identical nuclei in a process called mitosis
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in body cells, chromosomes are found in pairs.
mitotic cell division is important in the growth, repair, and development of multi cellular organisms
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the cell cycle
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even in adults, there are regions where there is continued growth or a regular replacement of cells.
the cell yule in normal, healthy cells follows a regular pattern
stage 1 = this the longest stage in the cell cycle. the cells grow bigger, increase their mass, and carry out normal cell activities. most importantly they replicate their DNA to form two copies of each chromosome ready for cell division. they also increase the number of sub-celluar structures such as mitochondria, ribosomes and chloroplasts ready for the cell to divide
stage 2 = Mitosis= is this process one set of chromosomes is pulled to each end of the dividing cell and the nucleus divides
stage 3= this is the stage during which the cytoplasm and the cell membranes also divide to form two identical daughter cells