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Biology of Humans: Concepts, Applications, and Issues

Judith Goodenough, Betty McGuire

Chapter 13

Body Defense Mechanisms - all with Video Answers

Educators

Chapter Questions

00:19

Problem 1

Indicate the correct statement:
a. An antibody is specific to one particular antigen.
b. Antibodies are held within the cell that produces them.
c. Antibodies are produced by macrophages.
d. Antibodies can be effective against viruses that are inside the host cell.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:24

Problem 2

What is an antigen?
a. a cell that produces antibodies
b. a receptor on the surface of a lymphocyte that recognizes invaders
c. a memory cell that causes a quick response to an invader when it is encountered a second time
d. a large molecule on the surface of an invader that triggers an immune response

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:38

Problem 3

Which of the following pairings of cell type and function is incorrect?
a. helper T cell-serves as "main switch" that activates both the cell-mediated immune responses and the antibody-mediated immune responses
b. cytotoxic T cell-presents antigen to the helper T cell
c. macrophage-roams the body looking for invaders, which are engulfed and digested when they are found
d. suppressor T cell-shuts off the immune response when the invader has been removed

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:31

Problem 4

When the doctors say they are looking for a suitable donor for a kidney transplant, they are looking for someone
a. whose tissues have self markers similar to those of the recipient.
b. who lacks antibodies to the recipient's tissues.
c. who has suppressor T cells that will suppress the immune response against the donor kidney.
d. who lacks macrophages.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:31

Problem 5

When the doctors say they are looking for a suitable donor for a kidney transplant, they are looking for someone
a. whose tissues have self markers similar to those of the recipient.
b. who lacks antibodies to the recipient's tissues.
c. who has suppressor T cells that will suppress the immune response against the donor kidney.
d. who lacks macrophages.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:38

Problem 6

A cytotoxic T cell could attack all of the following except
a. transplants of foreign tissue.
b. cells infected with viruses.
c. cancerous cells.
d. viruses that are free in the bloodstream.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:51

Problem 7

Which of the following is not a function of the inflammatory response?
a. preventing the injurious agent from spreading to nearby tissue
b. replacing injured tissues with connective tissue
c. disposing of cellular debris and pathogens
d. setting the stage for repair processes

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:46

Problem 8

In clonal selection of $\mathrm{B}$ cells, which substance is responsible for determining which cells will eventually become cloned?
a. antigen
b. interferon
c. antibody
d. complement

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:44

Problem 9

Innate immune system defenses include which of the following?
a. B cells
b. T cells
c. plasma cells
d. phagocytosis

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:40

Problem 10

Fever
a. is a higher-than-normal body temperature that is always dangerous.
b. decreases the metabolic rate of the body to conserve energy.
c. results from the actions of chemicals that reset the body's thermostat to a higher setting.
d. causes the liver to release large amounts of iron, which seems to inhibit bacterial replication.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:22

Problem 11

The lymphocytes that develop and mature in the bone marrow are the
a. B cells
b. macrophages
c. natural killer cells
d. T cells

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:24

Problem 12

A cell that kills any unrecognized cell in the body and is part of the nonspecific body defenses is a(n) __________.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:32

Problem 13

____________ is a chemical released by mast cells and basophils that produces most of the symptoms of an allergy.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:20

Problem 14

Antibodies are produced by _______________.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator
00:46

Problem 15

_____________ are important antigen-presenting cells.

Sam Limsuwannarot
Sam Limsuwannarot
Numerade Educator