Q: Which equation best represents the multiplication of activation signals required for T-cell activation?

$$Signal_{1} \times Signal_{2}$$

Q: A patient is exposed to a virus for the second time. Which equation best represents the increased rate of immune response due to memory cells?

$$Rate_{secondary} = Rate_{primary} \times Memory_{factor}$$

Question 1

Which of the following best describes the initial step required for T-cell activation in the immune response?

Accepted Answer

T-cells must be activated by antigen-presenting cells displaying the antigen on MHC complexes.

Question 2

Helper T-cells are named for their ability to assist other immune cells. Which cytokine do they primarily release to stimulate B-cell activation and antibody production?

Accepted Answer

Interleukin-4

Question 3

A patient is unable to mount an effective immune response due to a lack of co-stimulation signals during T-cell activation. Which process is most likely impaired?

Accepted Answer

T-cell proliferation and differentiation

Question 4

Which equation best represents the multiplication of activation signals required for T-cell activation?

Accepted Answer

$$Signal_{1} 	imes Signal_{2}$$

Question 5

Cytotoxic T-cells destroy infected cells by releasing which type of protein that forms pores in the target cell membrane?

Accepted Answer

Perforins

Question 6

Which immune cell type is responsible for killing cells that do not display normal MHC markers, such as virus-infected or cancer cells, without requiring prior activation?

Accepted Answer

Natural killer cells

Question 7

A new medication is being used to treat autoimmune diseases by targeting interleukin-17. What is the primary effect of this medication?

Accepted Answer

It decreases inflammation by inhibiting cytokine release.

Question 8

Which of the following best explains why memory T-cells are important in the immune response?

Accepted Answer

They allow for a faster and stronger response upon re-exposure to the same antigen.

Question 9

During an allergic reaction, which immune cells are primarily responsible for releasing histamine and promoting symptoms?

Accepted Answer

Mast cells

Question 10

Which process allows B-cells to produce antibodies after activation by helper T-cells?

Accepted Answer

Plasma cell differentiation

Question 11

A patient with sepsis is experiencing a systemic inflammatory response. Which cytokine is most likely elevated in their blood?

Accepted Answer

Interleukin-6

Question 12

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

Accepted Answer

They attack parasitic worms and modulate allergic responses.

Question 13

Which immune cell type is most likely to be involved in the rejection of a transplanted organ due to recognition of foreign antigens?

Accepted Answer

Cytotoxic T-cells

Question 14

Which of the following best describes the role of interleukin-2 in the immune response?

Accepted Answer

It promotes proliferation of T-cells after activation.

Question 15

A patient is exposed to a virus for the second time. Which equation best represents the increased rate of immune response due to memory cells?

Accepted Answer

$$Rate_{secondary} = Rate_{primary} 	imes Memory_{factor}$$

Question 16

Which of the following is NOT a function of complement proteins in the immune system?

Accepted Answer

Activation of helper T-cells

Question 17

Which immune cell type is most likely to release cytokines that help regulate the activity of other immune cells?

Accepted Answer

Helper T-cells

Question 18

Which of the following scenarios best illustrates the concept of antigen presentation?

Accepted Answer

A macrophage engulfs a bacterium and displays its peptides on MHC II to activate T-cells.

Question 19

Which of the following best explains why autoimmune diseases may be treated by targeting cytokines such as interleukin-17?

Accepted Answer

Cytokines promote inflammation that damages healthy tissues.

Question 20

Which immune cell type is most likely to be found in increased numbers during a parasitic infection?

Accepted Answer

Eosinophils

T-Cell Activation and Immune Cell Function in the Adaptive Immune Response

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드