Flashcards
The cell cycle
Cards in this deck (18)
- 1What are the 2 main phases of eukaryotic cell division?- Interphase
- Mitotic phase - 2What in general happens in the interphase?- Long periods of growth and normal working
- 3What processes happen during interphase?- DNA replication and checking for errors
- Protein synthesis
-Mitochondria and chloroplasts grow and divide
- Normal metabolic pathways - 4What happens during the G1 phase?- Proteins synthesise
- Cell grows
- Cell contents duplicates - 5What happens in the S phase?- Chromosomes replicate
- 6What happens in the G2 phase?- Checks duplicated chromosomes for errors and repairs errors
- Cell grows
- Energy stores increase - 7What happens in the mitotic phase?- Mitosis
- Cytokinesis - 8What is mitosis?Nucleus division
- 9What is cytokinesis?- Cytoplasm division which creates 2 new separate cells
- 10What happens in the G0 phase?Cell leaves the cycle permanently or temporarily.
- 11What are some of the reasons for G0 to occur permanently?Differentiation - specialised cells can't divide
- permanent removal
Damaged Cell - can no longer divide
- most cells only divide a certain number of times
Aged - more cells in the body - 12When does G0 occur temporarily?Lymphocytes temporarily leave the cycle in immune responses
- 13What do checkpoints do?Monitor and verify whether the processes have been accurately completed at each phase.
- 14What does the G1 checkpoint check?- Cell size
- Nutrients
- Growth factors
- DNA damage - 15Where is the G1 checkpoint?Between G1 and S phase
- 16What does G2 checkpoint check?- Cell size
- DNA replication
- DNA damage - 17Where is the G2 checkpoint?End of G2 and before mitotic phase
- 18What does the spindle assembly checkpoint checl?Checks chromosomes are attached to spindles and have aligned.
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- AS level Biology (Chapter 06 - Cell division) Flashcards on The cell cycle, created by Bethany Westwood on 10/01/2017.
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- Bethany Westwood
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