Question 1

The receptor cells affected by light rays contain molecules called

Accepted Answer

A)  ganglia. 
B)  ommatidia. 
C)  ampullae. 
D)  photopigments. 
E)  mechanoreceptors. 
A)  ganglia. 
B)  ommatidia. 
C)  ampullae. 
D)  photopigments. 
E)  mechanoreceptors.

Question 2

When light energy hits a photopigment, the molecule

Accepted Answer

A)  is destroyed, setting off a series of chemical reactions. 
B)  is separated from the plasma membrane. 
C)  forms an enzyme. 
D)  changes shape, setting off a series of chemical reactions. 
E)  generates an action potential. 
A)  is destroyed, setting off a series of chemical reactions. 
B)  is separated from the plasma membrane. 
C)  forms an enzyme. 
D)  changes shape, setting off a series of chemical reactions. 
E)  generates an action potential.

Question 3

Select the correct path through which sound waves travel to stimulate hearing.

Accepted Answer

A)  Outer ear → basilar membrane → inner ear → oval window → auditory tube 
B)  Outer ear → auditory tube → oval window → tympanic membrane → basilar membrane 
C)  Outer ear → oval window → middle ear → tympanic membrane → cochlea 
D)  Outer ear → tympanic membrane → middle ear → oval window → cochlea 
E)  Outer ear → tympanic membrane → auditory tube → cochlea → oval window 
A)  Outer ear → basilar membrane → inner ear → oval window → auditory tube 
B)  Outer ear → auditory tube → oval window → tympanic membrane → basilar membrane 
C)  Outer ear → oval window → middle ear → tympanic membrane → cochlea 
D)  Outer ear → tympanic membrane → middle ear → oval window → cochlea 
E)  Outer ear → tympanic membrane → auditory tube → cochlea → oval window

Question 4

Receptor potentials may generate action potentials in the receptor cell itself, or they may cause_________ that stimulates an associated neuron to generate action potentials.

Accepted Answer

A)  a change in pressure 
B)  an influx of Cl- 
C)  the production of glucose 
D)  the release of neurotransmitter 
E)  an increase in blood flow 
A)  a change in pressure 
B)  an influx of Cl- 
C)  the production of glucose 
D)  the release of neurotransmitter 
E)  an increase in blood flow

Question 5

Olfactory receptors are located in the_________ cavity.

Accepted Answer

The answer of Olfactory receptors are located in the_________ cavity....

Question 6

Optometrists, who help patients with their vision problems, know that certain types of repetitive use of the muscles around the lens of the eye can ʺtrainʺ the lens to become flatter than normal. This often occurs in truck drivers, sailors, and other people who focus on the horizon or at great distances for long periods of time. What would be the consequence of this on the eye over a long time period?

Accepted Answer

A)  Complete blindness 
B)  Color-deficiency 
C)  Farsightedness 
D)  Nearsightedness 
A)  Complete blindness 
B)  Color-deficiency 
C)  Farsightedness 
D)  Nearsightedness

Question 7

Which of the following chemical compounds stimulate cold receptors in the skin and oral cavity?

Accepted Answer

A)  Clove oil 
B)  Monosodium glutamate (MSG) 
C)  Menthol 
D)  Capsaicin 
E)  Camphor 
A)  Clove oil 
B)  Monosodium glutamate (MSG) 
C)  Menthol 
D)  Capsaicin 
E)  Camphor

Question 8

How many semicircular canals are in the inner ear of the right ear?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four 
A)  One 
B)  Two 
C)  Three 
D)  Four

Question 9

In a person who is nearsighted, the

Accepted Answer

A)  muscle that controls the thickness of the lens is weak. 
B)  eyeball is too short from front to back. 
C)  incoming light is focused in front of the retina. 
D)  aqueous humor is cloudier than normal. 
E)  lens is not functional at all. 
A)  muscle that controls the thickness of the lens is weak. 
B)  eyeball is too short from front to back. 
C)  incoming light is focused in front of the retina. 
D)  aqueous humor is cloudier than normal. 
E)  lens is not functional at all.

Question 10

Any cell that generates an electrical signal in response to a stimulus is a receptor.

Accepted Answer

The answer of Any cell that generates an electrical signal...

Question 11

In humans, when the eye focuses on a nearby object, the lens

Accepted Answer

A)  does not change. 
B)  becomes more rounded. 
C)  gets less transparent. 
D)  flattens. 
E)  gets more transparent. 
A)  does not change. 
B)  becomes more rounded. 
C)  gets less transparent. 
D)  flattens. 
E)  gets more transparent.

Question 12

A stimulus that is strong enough to trigger an action potential is said to be above

Accepted Answer

A)  capacity. 
B)  frequency. 
C)  maximum. 
D)  intensity. 
E)  threshold. 
A)  capacity. 
B)  frequency. 
C)  maximum. 
D)  intensity. 
E)  threshold.

Question 13

If the doctor says you have a middle ear infection, which of the following could be involved?

Accepted Answer

A)  Pinna 
B)  Vestibular apparatus 
C)  Auditory tube 
D)  Cochlea 
A)  Pinna 
B)  Vestibular apparatus 
C)  Auditory tube 
D)  Cochlea

Question 14

Why do your parents or grandparents most likely need glasses to read?

Accepted Answer

A)  The optic nerve sends signals more slowly as people age. 
B)  They have spent more time reading books at close range than have younger people. 
C)  The lens of the eye stiffens with age, making it difficult to focus on nearby objects. 
D)  The lens of the eye becomes rounder with age. 
E)  The photoreceptors of the eye are no longer as responsive. 
A)  The optic nerve sends signals more slowly as people age. 
B)  They have spent more time reading books at close range than have younger people. 
C)  The lens of the eye stiffens with age, making it difficult to focus on nearby objects. 
D)  The lens of the eye becomes rounder with age. 
E)  The photoreceptors of the eye are no longer as responsive.

Question 15

Which of the following animals has an eye with a single lens?

Accepted Answer

A)  Butterfly 
B)  Human 
C)  Dragonfly 
D)  Bee 
E)  Jellyfish 
A)  Butterfly 
B)  Human 
C)  Dragonfly 
D)  Bee 
E)  Jellyfish

Question 16

Which of the following is responsible for the perception of smell?

Accepted Answer

A)  Olfactory receptors 
B)  Olfactory bulb 
C)  Corpuscles 
D)  Optic nerve 
E)  Ganglion cells 
A)  Olfactory receptors 
B)  Olfactory bulb 
C)  Corpuscles 
D)  Optic nerve 
E)  Ganglion cells

Question 17

What is the effect of a cornea that is too flat?

Accepted Answer

A)  An enlarged blind spot 
B)  Blindness 
C)  Nearsightedness 
D)  Farsightedness 
A)  An enlarged blind spot 
B)  Blindness 
C)  Nearsightedness 
D)  Farsightedness

Question 18

Hair cells in the human ear are located on the

Accepted Answer

A)  tympanic membrane. 
B)  round window. 
C)  pinna. 
D)  basilar membrane. 
A)  tympanic membrane. 
B)  round window. 
C)  pinna. 
D)  basilar membrane.

Question 19

Sour sensations occur when H+ binds to taste receptor cells.

Accepted Answer

A) True 
 B)False

Question 20

The stronger the stimulus, the larger the receptor potential.

Accepted Answer

A) True 
 B)False

Exam 40: The Senses

The receptor cells affected by light rays contain molecules called

When light energy hits a photopigment, the molecule

Select the correct path through which sound waves travel to stimulate hearing.

Receptor potentials may generate action potentials in the receptor cell itself, or they may cause_________ that stimulates an associated neuron to generate action potentials.

Olfactory receptors are located in the_________ cavity.

Which of the following chemical compounds stimulate cold receptors in the skin and oral cavity?

How many semicircular canals are in the inner ear of the right ear?

In a person who is nearsighted, the

Any cell that generates an electrical signal in response to a stimulus is a receptor.

In humans, when the eye focuses on a nearby object, the lens

A stimulus that is strong enough to trigger an action potential is said to be above

If the doctor says you have a middle ear infection, which of the following could be involved?

Why do your parents or grandparents most likely need glasses to read?

Which of the following animals has an eye with a single lens?

Which of the following is responsible for the perception of smell?

What is the effect of a cornea that is too flat?

Hair cells in the human ear are located on the

Sour sensations occur when H+ binds to taste receptor cells.

The stronger the stimulus, the larger the receptor potential.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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