What can be inferred from the scientists' discovery?
(A) Cancer cells carry unique antigens - HSC - SSCE Biology - Question 19 - 2016 - Paper 1
Question 19
What can be inferred from the scientists' discovery?
(A) Cancer cells carry unique antigens.
(B) Self-antigens are not present on cancer cells.
(C) The melanoma p... show full transcript
Worked Solution & Example Answer:What can be inferred from the scientists' discovery?
(A) Cancer cells carry unique antigens - HSC - SSCE Biology - Question 19 - 2016 - Paper 1
Step 1
Cancer cells carry unique antigens.
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Answer
This statement suggests that cancer cells possess specific antigens that are not recognized by the immune system, potentially enabling them to evade detection.
Step 2
Self-antigens are not present on cancer cells.
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Answer
If true, this would imply that cancer cells lack the usual markers that the immune system recognizes, leading to a failure to mount an immune response.
Step 3
The melanoma patient has a dysfunctional immune system.
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This inference may be valid if the body is unable to respond appropriately against the cancer, suggesting some level of dysfunction.
Step 4
The body cannot mount an immune response against cancer cells.
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Answer
This suggests complete immune evasion by the cancer cells, which might be inferred from the lack of recognition of antigens.
