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Cell Changes Before Division
Cancer is caused by changes in cells that result in uncontrolled cell division.
Before a cell begins to divide, its DNA replicates to form two copies of each chromosome.
Describe one other change that occurs in a cell before the cell begins to divide.
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Marking points
- 1 Describes one accepted pre-division change other than DNA replication.
Full-mark answer
The cell grows and increases the number of sub-cellular structures such as mitochondria and ribosomes.
Why this answer loses marks
The chromosomes move to opposite ends.
That happens during division, not before it; give a growth or organelle increase that prepares the cell.