Question

The following are steps in the cell-mediated immune response. What is the correct sequence for these steps?

A) Several cycles of mitosis occur.
B) Antigen is engulfed and presented by a macrophage.
C) Cytotoxic T cells migrate to focus of infection.
D) T cells with specific receptors recognize the antigen.
E) T cells differentiate into cytotoxic T cells or T memory cells.
F) Cytotoxic T cells release perforin and/or lymphotoxin.

Answer 1

Answer:

Steps in correct sequence:  

B) – D) – A) – E) –C) – F)  

Explanation:

Cell-mediated immunity is a particular adaptive immune response. This type of immune response fight against intracellular infections such as viruses, some bacteria, fungi, and Plasmodium. Cell- mediated immune response is activated by TH1 cells.

Steps in correct sequence given below:

B) Antigen is engulfed and presented by a macrophage.  

D) T cells with specific receptors recognize the antigen.  

A) Several cycles of mitosis occur.  

E) T cells differentiate into cytotoxic T cells or T memory cells.  

C) Cytotoxic T cells migrate to focus of infection.  

F) Cytotoxic T cells release perforin and/or lymphotoxin.