The diagram below shows the location of cancer cells within a tissue - VCE - SSCE Biology - Question 19 - 2017 - Paper 1
Question 19
The diagram below shows the location of cancer cells within a tissue.
The number of cancer cells within the tissue is rapidly increasing.
This increase in the numbe... show full transcript
Worked Solution & Example Answer:The diagram below shows the location of cancer cells within a tissue - VCE - SSCE Biology - Question 19 - 2017 - Paper 1
Step 1
A. increased caspase function within each of the cancer cells.
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Answer
Increased caspase function would lead to enhanced apoptosis, which contradicts the condition of increasing cancer cell numbers.
Step 2
B. decreased rate of apoptosis in the surrounding normal cells.
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Answer
This does not directly relate to the increase in cancer cell numbers within the tissue.
Step 3
C. reduction in size of the nuclei of cancer cells compared to those of normal cells.
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While size differences can occur, this does not explain the increase in cancer cells.
Step 4
D. impaired signalling from death receptors located on the membrane of the cancer cells.
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Answer
This statement is correct as impaired signaling can prevent apoptosis, allowing cancer cells to survive and proliferate, leading to an increase in their number within the tissue.
