Each class of antibody is specifically defined by its
A) amino acid sequence of the constant region of the heavy chain.
B) amino acid sequence of the variable region of the light chain.
C) ability to cross the placenta.
D) presence of disulfide bonds.
E) ability to bind a range of antigens.

Question

Quizplus · Accepted Answer

Each class of antibody is defined by the amino acid sequence of the constant region of the heavy chain. The heavy chain constant region determines the functional properties of the antibody, including its ability to activate complement and cross the placenta.

Each Class of Antibody Is Specifically Defined by Its