Question 1

Which of the following best describes the purpose of the adaptive immune system?

Accepted Answer

To recognize and defend against distinct invaders and their products with high specificity

Question 2

Which cell type is responsible for producing antibodies in the adaptive immune response?

Accepted Answer

B cells

Question 3

What is the main function of dendritic cells in the adaptive immune response?

Accepted Answer

To present antigens to lymphocytes and initiate the adaptive immune response

Question 4

Which of the following is NOT a key attribute of adaptive immunity?

Accepted Answer

Immediate response

Question 5

Clonal selection in the adaptive immune system refers to:

Accepted Answer

The selection and expansion of lymphocyte clones that bind to a specific antigen

Question 6

Which of the following best explains why the adaptive immune system does not respond to 'self' antigens under normal conditions?

Accepted Answer

Because the immune system is tolerant to self-antigens, preventing autoimmune reactions

Question 7

A patient receives antibodies from an immune serum after exposure to rabies. This is an example of:

Accepted Answer

Artificially acquired passive immunity

Question 8

Which of the following best describes the role of CD8+ cytotoxic T cells?

Accepted Answer

They directly kill virus-infected or abnormal cells

Question 9

Which cytokine is primarily produced by Th1 cells and is responsible for activating macrophages?

Accepted Answer

INF\gamma

Question 10

What is the main advantage of immunological memory in adaptive immunity?

Accepted Answer

It enables a more rapid and vigorous response upon re-exposure to the same antigen

Question 11

Which of the following is a function of antibodies produced by B lymphocytes?

Accepted Answer

All of the above

Question 12

A child receives a vaccine and later produces antibodies against the pathogen. This is an example of:

Accepted Answer

Artificially acquired active immunity

Question 13

Which pathway is used by cytotoxic T cells to induce apoptosis in infected cells?

Accepted Answer

Both A and B

Question 14

Which of the following best describes the process of antigen presentation?

Accepted Answer

Dendritic cells display antigen fragments on their surface to activate T cells

Question 15

Which of the following is a correct sequence of events in the T-dependent antibody immune response?

Accepted Answer

Antigen presentation, Th cell activation, B cell activation, B cell proliferation

Question 16

Which of the following is a reason why the immune system does not maintain large numbers of all possible antigen-specific lymphocytes?

Accepted Answer

It would require more cells than the human body can support

Question 17

Which of the following best explains why autoimmune diseases occur?

Accepted Answer

The immune system fails to recognize self-antigens and attacks the body's own tissues

Question 18

Which of the following is a characteristic of the secondary immune response compared to the primary immune response?

Accepted Answer

It is faster and produces more antibodies due to memory cells

Question 19

Which of the following best describes the role of Th2 cells?

Accepted Answer

They stimulate B cells to produce antibodies and mediate anti-parasite responses

Question 20

Which of the following is a real-world example of naturally acquired passive immunity?

Accepted Answer

A child receives antibodies from the mother through breast milk

Chapter 16

Study Guide - Practice Questions