Question 1

These cells are responsible for producing antibody molecules.

Accepted Answer

A)  neutrophils 
B)  basophils 
C)  antigen-presenting cell (APCs) 
D)  B-cells 
A)  neutrophils 
B)  basophils 
C)  antigen-presenting cell (APCs) 
D)  B-cells

Question 2

This is the technique used to induce the immune system to develop an acquired immunity to a specific disease.

Accepted Answer

A)  immunization 
B)  vaccine 
C)  cell mediated immunity 
D)  antigen presentation technique 
A)  immunization 
B)  vaccine 
C)  cell mediated immunity 
D)  antigen presentation technique

Question 3

Motor neurons

Accepted Answer

A)  send messages to the brain. 
B)  are part of the sensory nervous system. 
C)  normally receive messages from sense organs. 
D)  are normally considered part of the peripheral nervous system. 
A)  send messages to the brain. 
B)  are part of the sensory nervous system. 
C)  normally receive messages from sense organs. 
D)  are normally considered part of the peripheral nervous system.

Question 4

Muscle cells shorten because

Accepted Answer

A)  they get bigger in diameter. 
B)  sodium ions flow along the surface of the actin molecule. 
C)  myosin molecules shorten. 
D)  actin molecules slide by myosin molecules. 
A)  they get bigger in diameter. 
B)  sodium ions flow along the surface of the actin molecule. 
C)  myosin molecules shorten. 
D)  actin molecules slide by myosin molecules.

Question 5

The secretions of exocrine glands

Accepted Answer

A)  directly enter the circulatory system. 
B)  are stimulated by nerve cells. 
C)  are always emptied onto the body surface. 
D)  are rarely under hormonal control. 
A)  directly enter the circulatory system. 
B)  are stimulated by nerve cells. 
C)  are always emptied onto the body surface. 
D)  are rarely under hormonal control.

Question 6

Skeletal muscle contractions are under the control of

Accepted Answer

A)  exocrine glands. 
B)  the endocrine system. 
C)  the endocrine and exocrine systems. 
D)  the nervous system. 
A)  exocrine glands. 
B)  the endocrine system. 
C)  the endocrine and exocrine systems. 
D)  the nervous system.

Question 7

The sense of smell

Accepted Answer

A)  can respond to very low concentrations of molecules. 
B)  requires a long time before odors can be perceived. 
C)  responds to four basic shapes of molecules. 
D)  fatigues very slowly. 
A)  can respond to very low concentrations of molecules. 
B)  requires a long time before odors can be perceived. 
C)  responds to four basic shapes of molecules. 
D)  fatigues very slowly.

Question 8

Which of the following muscles is under voluntary control?

Accepted Answer

A)  uterus 
B)  intestine 
C)  heart 
D)  biceps 
A)  uterus 
B)  intestine 
C)  heart 
D)  biceps

Question 9

When the nerve impulse reaches the end of the axon, it stimulates the release of a chemical that stimulates depolarization of the next neuron in the chain. This chemical is

Accepted Answer

A)  acetylcholine. 
B)  acetylcholinesterase. 
C)  thyroxine. 
D)  estrogen. 
A)  acetylcholine. 
B)  acetylcholinesterase. 
C)  thyroxine. 
D)  estrogen.

Question 10

The endocrine system differs from the nervous system in that the endocrine system can

Accepted Answer

A)  cause changes in behavior. 
B)  cause changes in growth. 
C)  only cause long-term changes in the functioning of an organism. 
D)  stimulate the nervous system, but the nervous system cannot stimulate the endocrine system. 
A)  cause changes in behavior. 
B)  cause changes in growth. 
C)  only cause long-term changes in the functioning of an organism. 
D)  stimulate the nervous system, but the nervous system cannot stimulate the endocrine system.

Question 11

To activate T-cells, the antigen must be shown to these cells by other cells called

Accepted Answer

A)  neutrophils. 
B)  basophils. 
C)  antigen-presenting cell (APCs). 
D)  B-cells. 
A)  neutrophils. 
B)  basophils. 
C)  antigen-presenting cell (APCs). 
D)  B-cells.

Question 12

Thick protein filaments in muscle contain

Accepted Answer

A)  actin. 
B)  malleus. 
C)  axon. 
D)  myosin. 
A)  actin. 
B)  malleus. 
C)  axon. 
D)  myosin.

Question 13

This class of antibodies is first to appear after infection, activates complement, and causes cells to clump, encouraging phagocytosis.

Accepted Answer

A)  IgG 
B)  IgM 
C)  IgE 
D)  IgD 
A)  IgG 
B)  IgM 
C)  IgE 
D)  IgD

Question 14

Which of the following is typical of an endocrine gland?

Accepted Answer

A)  It secretes into a duct. 
B)  It produces enzymes for digestion. 
C)  It usually secretes its products into the circulatory system. 
D)  It increases the metabolic rate. 
A)  It secretes into a duct. 
B)  It produces enzymes for digestion. 
C)  It usually secretes its products into the circulatory system. 
D)  It increases the metabolic rate.

Question 15

Pitch is determined by

Accepted Answer

A)  frequency of the sound vibrations. 
B)  intensity of sound. 
C)  volume of sound. 
D)  duration of sound. 
A)  frequency of the sound vibrations. 
B)  intensity of sound. 
C)  volume of sound. 
D)  duration of sound.

Question 16

Which of the following endocrine glands produces the largest number of different kinds of hormones?

Accepted Answer

A)  the pancreas 
B)  the testes 
C)  the thyroid 
D)  the pituitary 
A)  the pancreas 
B)  the testes 
C)  the thyroid 
D)  the pituitary

Question 17

Which of the following kinds of receptors would be most useful in allowing coordinated movement of an animal?

Accepted Answer

A)  sound receptors 
B)  touch receptors in the skin 
C)  pain receptors 
D)  pressure receptors in joints and muscles 
A)  sound receptors 
B)  touch receptors in the skin 
C)  pain receptors 
D)  pressure receptors in joints and muscles

Question 18

Which is NOT a nonspecific defense mechanism?

Accepted Answer

A)  inflammation 
B)  interferons 
C)  sneezing 
D)  B-cell immunity 
A)  inflammation 
B)  interferons 
C)  sneezing 
D)  B-cell immunity

Question 19

Colors are more difficult to see at low light levels because

Accepted Answer

A)  rods require high light levels to function. 
B)  there is no color to light when it is at low light levels. 
C)  cones do not function at low light levels. 
D)  cones do not respond to different wavelengths of light. 
A)  rods require high light levels to function. 
B)  there is no color to light when it is at low light levels. 
C)  cones do not function at low light levels. 
D)  cones do not respond to different wavelengths of light.

Question 20

The immune responses that result in the destruction of transplanted tissues are known collectively as

Accepted Answer

A)  cytotoxic T-cell responses. 
B)  antigen responses. 
C)  secondary responses. 
D)  rejection responses. 
A)  cytotoxic T-cell responses. 
B)  antigen responses. 
C)  secondary responses. 
D)  rejection responses.

Exam 26: The Bodys Control Mechanisms and Immunity

These cells are responsible for producing antibody molecules.

This is the technique used to induce the immune system to develop an acquired immunity to a specific disease.

Motor neurons

Muscle cells shorten because

The secretions of exocrine glands

Skeletal muscle contractions are under the control of

The sense of smell

Which of the following muscles is under voluntary control?

When the nerve impulse reaches the end of the axon, it stimulates the release of a chemical that stimulates depolarization of the next neuron in the chain. This chemical is

The endocrine system differs from the nervous system in that the endocrine system can

To activate T-cells, the antigen must be shown to these cells by other cells called

Thick protein filaments in muscle contain

This class of antibodies is first to appear after infection, activates complement, and causes cells to clump, encouraging phagocytosis.

Which of the following is typical of an endocrine gland?

Pitch is determined by

Which of the following endocrine glands produces the largest number of different kinds of hormones?

Which of the following kinds of receptors would be most useful in allowing coordinated movement of an animal?

Which is NOT a nonspecific defense mechanism?

Colors are more difficult to see at low light levels because

The immune responses that result in the destruction of transplanted tissues are known collectively as

What Is Biology

The Basics of Life: Chemistry

Organic Molecules: The Molecules of Life

Cell Structure and Function

Enzymes, Coenzymes, and Energy

Biochemical Pathways: Cellular Respiration

Biochemical Pathways: Photosynthesis

DNA and RNA: The Molecular Basis of Heredity

Cell Division: Proliferation and Reproduction

Patterns of Inheritance

Applications of Biotechnology

Diversity Within Species and Population Genetics

Evolution and Natural Selection

The Formation of Species and Evolutionary Change

Ecosystem Dynamics: The Flow of Energy and Matter

Community Interactions

Population Ecology

Evolutionary and Ecological Aspects of Behavior

The Origin of Life and the Evolution of Cells

The Classification and Evolution of Organisms

The Nature of Microorganisms

The Plant Kingdom

The Animal Kingdom

Materials Exchange in the Body

Nutrition: Food and Diet

Human Reproduction, Sex, and Sexuality

Filters