All of the following protect the body against entrance of germs except:
Correct answer: D. RBCs
- A. Mucus membrane
- B. WBCs
- C. Ciliated cells
- D. RBCs
Explanation
RBCs have no role in immunity. RBCs (red blood cells) do not protect the body against the entrance of germs. RBCs are responsible for carrying oxygen to the tissues and carbon dioxide away from the tissues. They cannot engulf or kill germs.
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About Immunity
Specific defense mechanisms protect the body through antigen recognition by B and T lymphocytes. The topic covers clonal selection, antibody production, plasma and memory cells, cell-mediated responses, helper and cytotoxic T cells, and the difference between primary and secondary immune responses.
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142 free Immunity MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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