Mitosis and Cell cycle

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  • Created by: Steff06
  • Created on: 06-02-16 09:01
Define chromatin
DNA and histone proteins together.
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Where are copies of chromosones found?
Centromere
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What is the term to describe 2 replica DNA strand?
A pair of sister chromatids.
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What happens in the S phase?
The DNA replicates.
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Describe the growth phase
Where proteins, organelles and other components are made.
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Summarise mitosis
The nucleus divides and the chromatids separate.
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Why is it important to be able to make new cells?
For growth, repair and replacement.
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What are the 4 stages of mitosis?
Prophase, metaphase, anaphase, telophase.
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What happens in prophase?
The chromosones condense. The nuclear envelope breaks down and disappears. The centriole divides in two and each daughter centriole moves to opposite ends to form the spindle.
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Stages in metaphase
The chromosones move to the central region (middle) of the spindle and each becomes attached by the centromere.
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Describe anaphase
Spindle fibres shorten, pulling sister chromatids further away from each other towards the poles.
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What happens in telophase?
As the separated sister chromosones reach the poles, a new nuclear envelope forms around each set. The spindle breaks down and disappears and the chromosones uncoil.
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Describe cytokineses
The whole cell splits into 2 new cells with genetically identical information.
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Other cards in this set

Card 2

Front

Where are copies of chromosones found?

Back

Centromere

Card 3

Front

What is the term to describe 2 replica DNA strand?

Back

Preview of the front of card 3

Card 4

Front

What happens in the S phase?

Back

Preview of the front of card 4

Card 5

Front

Describe the growth phase

Back

Preview of the front of card 5
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