221k views
3 votes
What role do all antigen-presenting cells (APCs) play?

Select one:
a. synthesis of antibodies
b. activation of T cells
c. phagocytosis of pathogens
d. recognition of epitopes

1 Answer

4 votes

Answer:

b). activation of T cells

Step-by-step explanation:

An APC (antigen-presenting cell) can be described as an immune cell, which detects, uptakes, and informs the acquired immune response when an infection takes place. B cells, macrophages, and dendritic cells are antigen-presenting cells.

These cells play an important role in activation of T cells. T cells are unable to recognize soluble or free antigens and can only recognize antigens processed and presented by carrier molecules, such as MHC molecules.

Presence of MHCII molecules is a defining feature of APCs that process and present antigens to T cells. Hence, all antigen-presenting cells help in activation of T cells.

Thus, the correct answer is option (b).

User Chris Droukas
by
8.6k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories