The specificity of an antibody is determined by
A) the fixed segment.
B) the antigenic determinants.
C) the variable region.
D) the size of the antibody.
E) the antibody class.

Question

Quizplus · Accepted Answer

The variable region, also known as the hypervariable region, is responsible for determining the specificity of an antibody by binding to antigenic determinants on the target molecule. The fixed segment and antibody class do not affect specificity, and size alone does not determine specificity.

The Specificity of an Antibody Is Determined by