The complement system helps destroy bacteria by
Correct answer: D. forming pores in the bacterial membrane that cause lysis
- A. carrying oxygen to the wound
- B. digesting food particles
- C. producing antigens
- D. forming pores in the bacterial membrane that cause lysis
Explanation
Complement proteins assemble into a membrane attack complex that punches holes in pathogen membranes, and also coat microbes for phagocytosis. It is a plasma protein cascade, not a cell type.
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About Specific Defense Mechanism
Specific defense mechanisms provide targeted immunity through B lymphocytes, T lymphocytes, antibodies and memory cells that recognize particular antigens. Questions cover humoral and cell mediated responses, clonal selection, primary and secondary immune responses, vaccination and passive immunity, while distinguishing adaptive defenses from the immediate, non specific innate response.
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