Cell Cycle (interphase)

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What are the 2 main phases of the cell cycle?
Interphase and Mitotic phase
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What is interphase?
The growth period between cell division, consists of stages G1, S and G2
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State a couple of things that occur during interphase
DNA is replicated, Protein synthesis, mitochondria grow and divide increasing in number ( same with chloroplasts)
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What happens in G1 stage?
The first growth stage: Organelles replicate and cell grows in size
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What happens during S stage?
The synthesis phase: DNA is replicated
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What happens during G2 stage?
The second growth phase: Cell continues to grow, energy stores increase, replicated DNA is checked for errors
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Briefly describe what happens in the mitotic phase?
Mitosis and cytokinesis
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What is cytokinesis?
When the cytoplasm splits and the two cells are produced
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What is the G0 stage?
The resting phase: where a cell temporarily or permanently leaves the cell cycle
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Why might a cell go into the G0 phase?
Differentiation- when a cell becomes specialised and so it is no longer able to divide or If the DNA is damaged
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What are checkpoints?
Points in the cell cycle which check if everything in that stage has been completed correctly so it is able to move on to the next stage
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What 3 check points are there?
G1 checkpoint (checks cell size, nutrients, growth factors, DNA damage) G2 checkpoint (cell size, DNA replication, DNA damage) Spindle assembly point (chromosome attachment to spindle)
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Card 2

Front

What is interphase?

Back

The growth period between cell division, consists of stages G1, S and G2

Card 3

Front

State a couple of things that occur during interphase

Back

Preview of the front of card 3

Card 4

Front

What happens in G1 stage?

Back

Preview of the front of card 4

Card 5

Front

What happens during S stage?

Back

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