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CELL CYCLECOPY DOWN
THINGS IN
BLACK
21R
PRETHINK
What stages are there to a human life cycle?
PRETHINK
Cells also have a life cycle!
STEPS OF THE CELL CYCLE
• Three stages of cell cycle: interphase, mitosis, and cytokinesis
STEPS OF THE CELL CYCLE
• Interphase—longest phase where cell grows and makes copies of DNA and organelles• Divided up into 3 phases: G1, S, G2• S phase when chromosomes
replicate
STEPS OF THE CELL CYCLE
• Mitosis—nucleus splits (4 steps)• Cytokinesis—cytoplasm splits, get
two new cells
Cell growth
DNA replication