Cellular Immune Response

Question 1 of 4

Animation 41.4 Quiz

What is the role of perforin in the cellular immune response?

It recognizes antigens displayed on class I MHC proteins.

It activates cytotoxic T cells.

It triggers virally infected cells to present viral antigens on their cell surfaces.

It causes target cells to lyse.

Correct. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

Incorrect. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

Animation 41.4 Quiz

Refer to the table below.

Place the events in order of their sequence during the cellular immune response.

4, 2, 5, 1, 3

5, 1, 3, 4, 2

3, 4, 2, 5, 1

5, 4, 2, 1, 3

Correct. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

Incorrect. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

Animation 41.4 Quiz

How are the effector phases of the cellular immune response and the humoral immune response similar?

Both involve the production of antibodies that bind to and inactivate invading pathogens.

Both involve T cell receptor recognition of an antigenic fragment displayed on another cell surface.

Both enlist the aid of cytotoxic T cells.

Both attack the host’s own cells that have been invaded by a pathogen.

Correct. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

Incorrect. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

Animation 41.4 Quiz

A biologist identifies a mutant line of mice that lacks the cellular immune response. He suspects that a mutation in these mice affects the ability of host cells to carry out the antigen presentation step during the activation phase. What could the biologist do to test his hypothesis?

Isolate antigen-presenting host cells from mutant mice and inject these into healthy mice to see if their cellular immune response is blocked.

Isolate antigen-presenting host cells from mice known to have an intact cellular immune response and inject these into the mutant mice to see if the normal response can be restored.

Isolate antigen-presenting host cells from mice known to have an intact cellular immune response and test whether they are lysed by perforin produced in mutant mice.

Isolate antigen-presenting host cells from mutant mice and test whether they are lysed by perforin produced in healthy mice.

Correct. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

Incorrect. See Key Concept 41.5 The Cellular Adaptive Response Involves T Cells and Receptors

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Chapter 1. Cellular Immune Response