Why do organ transplants trigger an immune response in a recipient? (A) Antigens in the recipient’s body recognise the organ as foreign. (B) Cell surface markers on the organ attack the recipient’s white blood cells. (C) Antibodies in the recipient stimulate the production of antigens on the organ. (D) The recipient’s white blood cells recognise the antigens on the organ as foreign.

SSCE HSC Biology Immunity: Why do organ transplants trigger

Why do organ transplants trigger an immune response in a recipient? (A) Antigens in the recipient’s body recognise the organ as foreign - HSC - SSCE Biology - Question 13 - 2012 - Paper 1

Question 13

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Why do organ transplants trigger an immune response in a recipient? (A) Antigens in the recipient’s body recognise the organ as foreign. (B) Cell surface markers o... show full transcript

Worked Solution & Example Answer:Why do organ transplants trigger an immune response in a recipient? (A) Antigens in the recipient’s body recognise the organ as foreign - HSC - SSCE Biology - Question 13 - 2012 - Paper 1

Step 1

A) Antigens in the recipient’s body recognise the organ as foreign.

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Answer

While this statement is partially accurate, it does not capture the complete picture of the immune response mechanism during organ transplants.

Step 2

B) Cell surface markers on the organ attack the recipient’s white blood cells.

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Answer

This statement is incorrect as it misrepresents the action of the cellular markers, which do not attack the recipient's cells.

Step 3

C) Antibodies in the recipient stimulate the production of antigens on the organ.

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Answer

This is not how antibodies interact with antigens, and thus this statement does not correctly explain the immune response.

Step 4

D) The recipient’s white blood cells recognise the antigens on the organ as foreign.

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Answer

This is the correct explanation. The immune response is initiated when the recipient's immune system identifies the transplanted organ's antigens as foreign, leading to an immune response.

Why do organ transplants trigger an immune response in a recipient? (A) Antigens in the recipient’s body recognise the organ as foreign - HSC - SSCE Biology - Question 13 - 2012 - Paper 1

Worked Solution & Example Answer:Why do organ transplants trigger an immune response in a recipient? (A) Antigens in the recipient’s body recognise the organ as foreign - HSC - SSCE Biology - Question 13 - 2012 - Paper 1

A) Antigens in the recipient’s body recognise the organ as foreign.

B) Cell surface markers on the organ attack the recipient’s white blood cells.

C) Antibodies in the recipient stimulate the production of antigens on the organ.

D) The recipient’s white blood cells recognise the antigens on the organ as foreign.

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