Question

Identify the incorrect statement about antibodies.

• A. Antibodies are produced by different combinations of soluble proteins in the blood called complement.
• B. When antibodies bind to a bacterial cell, it may keep that cell from adhering to host cells.
• C. The specific receptors on T cells that would interact with a specific antigen are the same shape as antibodies that will interact with that antigen.
• D. By binding to antigens, antibodies mark those antigens for destruction by macrophages.
• E. By binding to an invader, antibodies attract proteins that lyse the target membrane.

Answer 1

The correct option is A Antibodies are produced by different combinations of soluble proteins in the blood called complement.

Antibodies are produced by different combinations of soluble proteins in the blood called complement. These are produced by specialized white blood cells called B lymphocytes (or B cells). When an antigen binds to the B-cell surface, it stimulates the B cell to divide and mature into a group of identical cells called a clone.

Antibodies recognize specific antigens by identifying certain areas on the surface of the antigen known as antigenic determinants. Once the specific antigenic determinant is recognized, the antibody will bind to the determinant. The antigen is tagged as an intruder and labeled for destruction by other immune cells.

So, the correct answer is option A.