Complement does augment opsonization of bacteria by antibodies, but it does not result in the lysis of Gram-positive bacteria. Instead, it results in the lysis of Gram-negative bacteria by forming a membrane attack complex. Therefore, the best choice is D, which acknowledges the ability of complement to augment opsonization and to lyse Gram-negative bacteria.

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Complement

Question 46

Multiple Choice

Complement

A) augments opsonization of bacteria by antibodies.
B) results in lysis of Gram-negative bacteria.
C) results in lysis of Gram-positive bacteria.
D) both augments opsonization of bacteria by antibodies and results in lysis of Gram-negative bacteria.
E) All of the choices are correct.

Correct Answer: