Question 1

Which organ is primarily responsible for the maturation of T lymphocytes in the immune system?

Accepted Answer

The thymus

Question 2

Which of the following is NOT a function of antibodies in the immune response?

Accepted Answer

Phagocytosis of pathogens

Question 3

A patient is unable to produce antibodies that recognize multiple epitopes on a single antigen. Which type of antibody preparation is most likely being used?

Accepted Answer

Monoclonal antibodies

Question 4

Which part of the IgG molecule is NOT involved in binding to an antigen?

Accepted Answer

Constant region

Question 5

How many polypeptide chains make up a typical immunoglobulin G (IgG) molecule?

Accepted Answer

2 light chains and 2 heavy chains

Question 6

Which of the following mechanisms does NOT contribute to antibody diversity?

Accepted Answer

Apoptosis

Question 7

Immunoglobulin classes are distinguished by differences in which component?

Accepted Answer

Their heavy chains

Question 8

Which of the following is a correct description of polyclonal antibodies?

Accepted Answer

Consist of different immunoglobulins recognizing multiple epitopes on the same antigen

Question 9

Which class of immunoglobulin is most abundant in serum and is responsible for long-term immunity?

Accepted Answer

IgG

Question 10

A researcher is designing an experiment to detect a specific protein using antibodies. Which type of antibody would provide the highest specificity for a single epitope?

Accepted Answer

Monoclonal antibody

Question 11

Which of the following statements about the structure of antibodies is TRUE?

Accepted Answer

Each antibody has two identical heavy chains and two identical light chains

Question 12

Which immune response is primarily mediated by T lymphocytes?

Accepted Answer

Cellular immunity

Question 13

Which of the following is a function of antibodies in the immune system?

Accepted Answer

Tagging pathogens for destruction by phagocytes

Question 14

Which of the following best describes the difference between monoclonal and polyclonal antibodies?

Accepted Answer

Monoclonal antibodies recognize a single epitope, while polyclonal antibodies recognize multiple epitopes on an antigen

Question 15

Which of the following is NOT a class of immunoglobulin?

Accepted Answer

IgF

Question 16

A patient with a deficiency in B lymphocytes would most likely have impaired:

Accepted Answer

Humoral immunity

Question 17

Which of the following statements about antibody diversity is FALSE?

Accepted Answer

It is achieved by apoptosis

Question 18

Which region of the antibody determines its class (isotype)?

Accepted Answer

Constant region of the heavy chain

Question 19

Which of the following is a real-world application of monoclonal antibodies?

Accepted Answer

Targeted therapy for cancer

Question 20

If an antibody has the following structure: 2 light chains, 4 heavy chains, and 2 J chains, how many total chains does it have?

Accepted Answer

$$2 + 4 + 2 = 8$$

Antibodies and Immunity: Structure, Function, and Diversity

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