Which applies to the classical complement pathway, but NOT to the alternative complement pathway?

A. Complement activation leads to the development of a multiunit protein called the membrane attack complex (MAC). 
B. There is a cascade of proteins activated, which results in the killing of microbes.
C. Antibodies activate the first complement protein (C1).
D. Complement proteins serve as opsonins that facilitate phagocyte binding to microbes.
E. Activation of C3 results in the formation of C3b.


Answer: C

Anatomy & Physiology

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Which of the following drugs is most likely to cause sexual dysfunction in males?

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