The part of the antibody that binds an antigen:a. is known as the Fc fragment. b. is called an ...

The part of the antibody that binds an antigen:a.
   is known as the Fc fragment.
  b. is called an epitope.
  c. makes up the tail of the Y-shaped molecule.
  d. recognizes the antigenic determinant of that antigen.
  e. is known as the constant segment.

Question 2

Arrange the steps of antibody-mediated immunity in the proper order.
  1) plasma cells secrete antibodies
  2) TH cells interact with B cells displaying the same antigen-MHC complex
  3) contact with antigen
  4) clones of B cells produced
  5) fragmentation of antigen
  a. 3  4  2  1  5
  b. 3  5  2  4  1
  c. 4  3  2  1  5
  d. 1  3  5  2  4
  e. 5  3  4  2  1