Figure 1 shows animal cells.
Some of the cells are dividing by mitosis for growth and repair.
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What fraction of the cells in Figure 1 is dividing by mitosis?
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Worked Solution & Example Answer:Figure 1 shows animal cells - AQA - GCSE Biology - Question 2 - 2010 - Paper 1
Step 1
What fraction of the cells in Figure 1 is dividing by mitosis?
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Answer
The fraction of the cells dividing by mitosis in Figure 1 can be determined by examining the provided cells. It is observed that 1 out of a total of 4 cells is undergoing mitosis. Therefore, the correct answer is:
rac{1}{4}
Step 2
How many chromosomes will each new cell contain after mitosis?
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Answer
Mitosis involves the division of a cell into two new cells, and since the original cell contains 10 chromosomes, each new cell will also contain 10 chromosomes after division. Thus, the answer is:
10
Step 3
Complete the sentences.
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Answer
Before mitosis occurs, the cell grows.
2. The genetic material doubles when the DNA replicates.
3. After the chromosomes have been pulled to each end of the cell, the cytoplasm divides.
Step 4
Which stage of the cell cycle takes the most time?
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Answer
According to Figure 2, stage C of the cell cycle takes the most time. Therefore, the correct option is:
C
Step 5
What percentage of time in the cell cycle is stage A?
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Answer
It is determined that stage A accounts for 10% of the total time in the cell cycle. Thus, the answer is:
