The Cell Cycle

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  • Created by: Alice
  • Created on: 28-05-14 10:02
What are the three stages of the cell cycle?
Interphase, nuclear division, cell division
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How long does 1 cell cycle take?
24 hours
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What percentage of this cycle is Interphase?
90%
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What are the three stages of Interphase?
G1 (Growth 1), S (Synthesis), G2 (Growth 2)
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In general, what does not happen in Interphase?
There is no division
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What happens in G1?
Organelle proteins produced
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What happens in S?
DNA replicated
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What happens in G2?
Energy stores increased, organelles grow and divide
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What happens in nuclear division?
Nucleus either divides into 2 or 4, depending on whether the process is in Mitosis or Meiosis
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What is the formal name for Cell Division?
Cytokinesis
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What happens in cell division?
Whole cell thus divides into 2 or 4
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What is cancer?
Growth disorder of cells
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What is cancer caused by?
Damage to genes which regulate mitosis and cell cycle, causing uncontrolled cell growth, making a tumour which constantly expands
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Drugs treat cancer disrupt the cell cycle in two ways. What are they?
Prevent DNA from replicating in Interphase. Stop metaphase stage where spindles form, can't pull apart to divide.
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The treatment of cancer affects other cells such as...
Stops hair producing cells from being produced.
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In the cell cycle graph, it takes 12 hours and there are 5 points highlighted. Name A, B, C, D, and E.
A - Mitosis, B - Meiosis, C - Meiosis 1, D - Meiosis 2, E - Fertilisation
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Card 2

Front

How long does 1 cell cycle take?

Back

24 hours

Card 3

Front

What percentage of this cycle is Interphase?

Back

Preview of the front of card 3

Card 4

Front

What are the three stages of Interphase?

Back

Preview of the front of card 4

Card 5

Front

In general, what does not happen in Interphase?

Back

Preview of the front of card 5
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