Question 1

Which of the following is a primary function of lymph nodes in the immune system?

Accepted Answer

Filtration of lymph and activation of lymphocytes

Question 2

Which cell type is primarily responsible for phagocytosis in the innate immune response?

Accepted Answer

Macrophage

Question 3

Which antibody class is most effective at activating the complement system?

Accepted Answer

IgM

Question 4

A patient receives an injection of antibodies after exposure to rabies. This is an example of:

Accepted Answer

Passive immunity

Question 5

Which of the following best describes the role of MHC class I molecules?

Accepted Answer

Present endogenous antigens to cytotoxic T cells

Question 6

Which chemical messenger is most associated with fever and inflammation?

Accepted Answer

Interleukin-1

Question 7

Which of the following is a function of dendritic cells in the immune system?

Accepted Answer

Present antigens to T cells

Question 8

Which process describes the engulfment and digestion of pathogens by immune cells?

Accepted Answer

Phagocytosis

Question 9

Which of the following is NOT a function of antibodies?

Accepted Answer

Direct killing of infected cells

Question 10

Which immune cell is most directly involved in the destruction of virus-infected cells?

Accepted Answer

Cytotoxic T cell

Question 11

Which of the following best describes the difference between primary and secondary lymphoid organs?

Accepted Answer

Primary organs are sites of lymphocyte maturation, secondary organs are sites of immune response

Question 12

Which of the following is a key feature of the adaptive immune response?

Accepted Answer

Memory formation after exposure

Question 13

Which leukocyte is most associated with allergic reactions and the release of histamine?

Accepted Answer

Basophil

Question 14

Which of the following mechanisms is used by antibodies to enhance phagocytosis?

Accepted Answer

Opsonization

Question 15

A newborn receives antibodies from its mother through breast milk. This is an example of:

Accepted Answer

Passive immunity

Question 16

Which of the following is the correct formula for calculating the concentration of antibodies in plasma?

Accepted Answer

$$C = \frac{n}{V}$$

Question 17

Which immune cell is responsible for producing antibodies?

Accepted Answer

Plasma cell

Question 18

Which of the following is a function of the complement system?

Accepted Answer

Forming membrane attack complexes to lyse pathogens

Question 19

Which of the following best describes clonal selection in the immune system?

Accepted Answer

The activation and proliferation of lymphocytes specific to an antigen

Question 20

Which of the following is a major difference between innate and adaptive immunity?

Accepted Answer

Adaptive immunity has memory and specificity

Ch. 7: The Immune System – Study Guide and Review

Study Guide - Practice Questions