6.2.5 - T Cell Response

Question 1

What Are T Cells & Where Are They Produced?
(2 Points)

Answer 1

~ Type of white blood cell involved with the specific immune response, activated by antigen presenting cells.

~ Produced in the bone marrow, mature in the thymus.

Question 2

What Can Antigen Presenting Cells Be?
(3 Points)

Answer 2

~ Phagocyte (Macrophage).

~ Infected body cell.

~ Pathogen.

Question 3

What Is The Surface Of A T Cell Covered With?
(2 Points)

Answer 3

~ T cell receptors, that are specific to a particular type of antigen.

~ Each T cell will bind to a different antigen.

Question 4

Describe The T Cell Response
(3 Points)

Answer 4

~ Activated once they encounter and bind to their complementary antigen on the surface of an antigen presenting cell.

~ Activated T cells then divide by mitosis to increase in number by producing clones of its self with the same T cell receptor on its surface.

~ As they divide they differentiate into different types of T cells, which all carry out different functions.

Question 5

What Are The Different T cells, Once They Have Differentiated?
(3 Points)

Answer 5

~ T helper cells.

~ T killer cells.

~ T memory cells.

Question 6

What Do T Helper Cells Do?

Answer 6

Release chemical signalling molecules that activate B cells, T killer cells and macrophages.

Question 7

What Do T Killer Cells Do?

Answer 7

Bind to the relevant specific antigen on an infected cell, destroying it.

Question 8

What Do T Memory Cells Do?

Answer 8

Remain in the blood and enable a faster specific immune response if the same pathogen is encountered again.