Question

multiple choice question
the proteins on the surface of apcs that function to present antigens to other cells are called the ______.

• mhc proteins
• epitope
• antibodies
• complement proteins

Explanation:

To solve this, we analyze each option:

• MHC proteins (Major Histocompatibility Complex) are on antigen - presenting cells (APCs) and present antigens to other immune cells.
• Epitope is the part of an antigen recognized by the immune system, not a presenting protein on APCs.
• Antibodies are produced by B - cells to neutralize antigens, not for presenting on APCs.
• Complement proteins are part of the complement system for immune responses like opsonization and lysis, not for antigen presentation on APCs.

Answer:

A. MHC proteins