Autoimmune diseases are a result of:
A) T lymphocytes responding to pathogens
B) T lymphocytes responding to self-antigens
C) B lymphocytes responding to pathogens
D) B lymphocytes responding to self-antigens. - Scottish Highers Human Biology - Question 22 - 2022
Question 22
Autoimmune diseases are a result of:
A) T lymphocytes responding to pathogens
B) T lymphocytes responding to self-antigens
C) B lymphocytes responding to pathogen... show full transcript
Worked Solution & Example Answer:Autoimmune diseases are a result of:
A) T lymphocytes responding to pathogens
B) T lymphocytes responding to self-antigens
C) B lymphocytes responding to pathogens
D) B lymphocytes responding to self-antigens. - Scottish Highers Human Biology - Question 22 - 2022
Step 1
A) T lymphocytes responding to pathogens
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Answer
This option is incorrect. T lymphocytes primarily respond to foreign pathogens such as viruses and bacteria, not to self-antigens.
Step 2
B) T lymphocytes responding to self-antigens
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Answer
This option is correct. Autoimmune diseases occur when T lymphocytes mistakenly recognize self-antigens as harmful and mount an immune response against the body's own tissues.
Step 3
C) B lymphocytes responding to pathogens
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Answer
This option is incorrect. While B lymphocytes do respond to pathogens by producing antibodies, their response does not directly cause autoimmune diseases.
Step 4
D) B lymphocytes responding to self-antigens
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Answer
This option is partially correct but not the best choice. B lymphocytes can contribute to autoimmune conditions by producing antibodies against self-antigens, but T lymphocytes have a more direct role in the autoimmune response.
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