The portions of an antigen's exposed surfaces to which its specific antibody binds are regions called

A) opsonins.
B) the constant segments of the light and heavy chains.
C) antigenic-determinant sites.
D) complement-binding sites.
E) antigen-binding sites.


C) antigenic-determinant sites.

Anatomy & Physiology

You might also like to view...

Fill in the missing blood vessel.Hepatic vein; ________; right atrium

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

What branch of physiology would study the effects of sunbathing on the skin?

A. cell physiology B. systemic physiology C. regional physiology D. organ physiology

Anatomy & Physiology

Up-regulation of receptors

A) Results in increased sensitivity to its ligand. B) Results in decreased sensitivity to its ligand. C) Occurs when a ligand has been present at high levels. D) Both B and C

Anatomy & Physiology

Fertilization typically occurs in the _________, and it restores the _________ number of chromosomes

A. ampulla of the uterine tube; haploid B. ampulla of the uterine tube; diploid C. body of the uterus; polyploid D. isthmus of the uterine tube; haploid E. isthmus of the uterine tube; polyploid

Anatomy & Physiology