immune system and response, HIV

Question 1

What do T-cells respond to?

Answer 1

only antigens presented on antigen presenting cells. Not antigens detached from cells.

Question 2

outline the role of helper t cells

Answer 2

-They have receptors on their surface which attach to antigens on APC.
-This activates the t cell to divide by mitosis and stimulate phagocytes, activate B lymphocytes, produce cytotoxic cells, stimulate memory b cells.

Question 3

How do cytotoxic t cells kill infected body cells?

Answer 3

by releasing perforin.

Question 4

What do plasma cells make?

Answer 4

antibodies

Question 5

What is the role of memory B cells?

Answer 5

Ti divide by mitosis and make plasma cells rapidly

Question 6

How are plasma cells and memory b cells produced?

Answer 6

When b cell collides with helper t cell after becoming an antigen presenting cell, this activates b cell to go through mitosis to make clones. These differentiate into plasma cells or memory b cells.

Question 7

What do memory b cells differentiate into?

Answer 7

Plasma cells