Tb 17031 when an antigen binds to the antibody in the

59. TB 17.031 When an antigen binds to the antibody in the membrane of a B cell, the B cell proliferates and
forms a population of B lymphocytes that all make the same antibody. The population of B lymphocytes thus
formed is called a(n) _________.
a. group
b. clone
c. identicon
d. proliferate
e. codon
Ans: B
Feedback: 17.2
Difficulty: Easy
60. TB 17.032 Some of the activated B cells differentiate into short-lived cells that secrete large amounts of
antibodies. Such cells are called __________.
Feedback: 17.2
Difficulty: Easy

61. TB 17.033 What feature of cellular structure is found to be characteristically amplified in plasma cells, but
not in their precursor cells?
Feedback: 17.2
Difficulty: Easy
62. TB 17.034 Some of the activated B cells remain in lymphoid tissue and respond rapidly at a later date if the
antigen reappears in the body. Such cells are called __________.
Feedback: 17.2
Difficulty: Easy
63. TB 17.035 What happens to plasma cells after the removal of the original antigenic stimulus?
a. They die off.
b. They may, in some cases, persist for the person's lifetime.
c. They revert to precursor cells.
d. They proliferate even more.
e. They dedifferentiate.
Ans: A
Feedback: 17.2
Difficulty: Easy
65. TB 17.036 Genes encoding antibodies are generated by a process in which DNA segments are _______
combined.
Feedback: 17.2
1042
Difficulty: Easy

68. TB 17.037 The destruction of B cells that can make autoantibodies by apoptosis is called _________.
Feedback: 17.2
Difficulty: Easy
69. TB 17.038 The inactivation of B cells that can make autoantibodies so that they cannot respond to an
antigenic stimulus is called _________.
Feedback: 17.2
Difficulty: Easy
70. TB 17.039 The inactivation of B cells that can make autoantibodies and/or the destruction of these cells so
that they cannot respond to an antigenic stimulus can induce in the body a state of ___________ to itself.
a. immunologic resistance
b. immunologic tolerance
c. immunoreactivity
d. immunoreactionless
Ans: B
Feedback: 17.2
1043
Difficulty: Easy