Summary cell cycle and mitosis flashcards

cell cycle and mitosis
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1. cell cycle - takes place in dividing body cells
- cell cycle doubles the number of cells without changing
genetic information
- cell cycle produces new cells for growth in multicellular
organisms, asexual reproduction and wound healing
- non embryonic eukaryotic cells divide when triggered to
enter the cell cycle
- 3 main stages: interphase, mitosis and cytokinesis (cell
division)

2. cell cycle dia-
gram




3. G0 phase - most non-dividing cells (e.g. brain cells) go to this phase

4. G1 phase - growth of the cytoplasm and organelles

5. S phase - synthesis of DNA

6. G2 phase - second growth phase

7. mitosis - process of nuclear division where two genetically identi-
cal nuclei are formed from one parent cell nucleus
- stages of mitosis: Prophase, Metaphase, Anaphase,
Telophase (PMAT)

8. prophase - chromosomes have already replicated during interphase
- chromosomes shorten and thicken (supercoil)
- nuclear envelope breaks down
- centriole divides and each daughter centriole moves to
opposite poles of the cell to form spindle

9. metaphase - the chromosomes move to the central region of the
spindle (the equator)
- they attach to the spindle at the centromere

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