Which of the following statements is TRUE?
A)There are at least thirty complement proteins.
B)All of the complement proteins are constantly active in serum.
C)Factors B,D,and P cause cytolysis.
D)Complement activity is antigen-specific.
E)Complement increases after immunization.

Question

Quizplus · Accepted Answer

There are actually more than 30 complement proteins, making statement A true. Statement B is false, as not all complement proteins are constantly active in serum. Factors B, D, and P do not cause cytolysis, so statement C is false. Complement activity is not antigen-specific, so statement D is false. Statement E is true, as complement levels can increase after immunization.

Which of the Following Statements Is TRUE