bio 6-2
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