bio 6-2

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synthesis (S) phase

DNA is copied, forms two chromatids, attached at the centromere

mitosis

in eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes

interphase

a period between two mitotic or meiotic divisions during which the cell grows, copies its DNA and synthesize proteins. 90% of cell cycle

cancer

a tumor in which the cells begin dividing at an uncontrolled rate and become invasive

first growth (G1) phase

makes up major portion of most cells lives, cells grow rapidly, cell carries out routine functions

second growth (G2) phase

nucleus divides, mitochondria replicate, microtubules are assembled

cytokinesis

the division of the cytoplasm of a cell; cytokinesis follows the division of the cells nucleus by mitosis or meiosis

cell cycle

the life cycle of a cell; in eukaryotes it consits of a cell growth period in which DNA is synthesized and a cell division period in which mitosis takes place


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