Question 1

Which of the following is NOT a major function of the immune system?

Accepted Answer

Regulating blood glucose levels

Question 2

Which of the following best describes the difference between the innate and adaptive immune systems?

Accepted Answer

The innate immune system provides rapid, non-specific defense, while the adaptive immune system is slower but highly specific.

Question 3

A patient is exposed to a novel virus. Which of the following is the correct sequence of the four steps of the immune response?

Accepted Answer

Detection, communication, recruitment, destruction

Question 4

Which of the following is a physical barrier of the immune system?

Accepted Answer

Skin

Question 5

Which cells are primarily responsible for phagocytosis in the immune system?

Accepted Answer

Neutrophils and macrophages

Question 6

A researcher is studying the process by which neutrophils destroy microorganisms. Which mechanism is primarily involved?

Accepted Answer

Phagocytosis

Question 7

Where are monocytes and macrophages typically found, and what is their main role?

Accepted Answer

Monocytes are found in the blood and differentiate into macrophages in tissues, where they phagocytose pathogens and debris.

Question 8

Which of the following best explains how dendritic cells bridge the innate and adaptive immune systems?

Accepted Answer

They present antigens from pathogens to T cells, initiating adaptive immunity.

Question 9

Which equation best represents the process of phagocytosis by a macrophage?

Accepted Answer

$$\mathrm{Pathogen} + \mathrm{Macrophage} \rightarrow \mathrm{Phagosome} \rightarrow \mathrm{Phagolysosome} \rightarrow \mathrm{Digested~Pathogen}$$

Question 10

Which of the following is a function of cytokines in the immune response?

Accepted Answer

They act as signaling molecules to coordinate immune cell activity.

Question 11

A patient with an autoimmune disease is found to have a breakdown in 'self-tolerance.' What does this mean?

Accepted Answer

The immune system fails to recognize and ignore the body's own cells, attacking them as if they were foreign.

Question 12

Which of the following best describes the difference between MHC class I and MHC class II molecules?

Accepted Answer

MHC class I is expressed on all nucleated cells and presents endogenous antigens; MHC class II is expressed on antigen-presenting cells and presents exogenous antigens.

Question 13

Which of the following best explains how B and T cells recognize antigens compared to innate immune cells?

Accepted Answer

B and T cells recognize specific antigens via unique receptors, while innate immune cells recognize general patterns via pattern recognition receptors (PRRs).

Question 14

A patient is exposed to a bacterial infection. Which of the following best describes the role of neutrophils in the response?

Accepted Answer

Neutrophils rapidly migrate to the site of infection and destroy bacteria by phagocytosis.

Question 15

Which of the following is an example of a chemical barrier in the immune system?

Accepted Answer

Lysozyme in saliva

Question 16

Which of the following equations best represents the clonal selection theory for adaptive immunity?

Accepted Answer

$$\mathrm{Antigen} + \mathrm{Specific~Lymphocyte} \rightarrow \mathrm{Activation} \rightarrow \mathrm{Clonal~Expansion}$$

Question 17

A patient with a genetic defect cannot produce PRRs (pattern recognition receptors). Which aspect of immunity would be most affected?

Accepted Answer

Innate immune recognition of pathogens

Question 18

Which of the following is a real-life example of the immune system's failure to enforce self-tolerance?

Accepted Answer

Type 1 diabetes mellitus, where the immune system attacks pancreatic beta cells

Question 19

Which of the following best describes how inflammation contributes to the immune response?

Accepted Answer

It increases blood flow and recruits immune cells to the site of infection.

Chapter 24: The Immune System – Study Guide Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드