Question 1

Which of the following statements regarding compound eyes is true?

Accepted Answer

A) Compound eyes have one light-focusing lens. 
B) Compound eyes are poor motion detectors. 
C) Most insect compound eyes provide excellent color vision. 
D) Compound eyes can perceive only visible light. 
A) Compound eyes have one light-focusing lens. 
B) Compound eyes are poor motion detectors. 
C) Most insect compound eyes provide excellent color vision. 
D) Compound eyes can perceive only visible light. C

Question 2

A person whose eyeball is shorter than normal suffers from

Accepted Answer

A) hyperopia. 
B) myopia. 
C) astigmatism. 
D) presbyopia. 
A) hyperopia. 
B) myopia. 
C) astigmatism. 
D) presbyopia. A

Question 3

The eyes of a planarian provide

Accepted Answer

A) a three-dimensional image, but in black and white. 
B) a two-dimensional image. 
C) a higher degree of resolution than human eyes. 
D) information about light intensity and direction. 
A) a three-dimensional image, but in black and white. 
B) a two-dimensional image. 
C) a higher degree of resolution than human eyes. 
D) information about light intensity and direction. D

Question 4

Which of the following statements best describes the basis of sensory adaptation?

Accepted Answer

A) A continuously stimulated sensory receptor triggers fewer action potentials, so stimuli sent to the brain decrease and awareness of the stimuli is diminished. 
B) The nerve fiber synapsed with a sensory receptor gradually returns to its baseline level of firing despite continued neurotransmitter stimulation. 
C) The spinal cord interneurons that receive a prolonged stimulus gradually come to ignore it. 
D) The thalamic centers that receive a prolonged stimulus gradually come to ignore it. 
A) A continuously stimulated sensory receptor triggers fewer action potentials, so stimuli sent to the brain decrease and awareness of the stimuli is diminished. 
B) The nerve fiber synapsed with a sensory receptor gradually returns to its baseline level of firing despite continued neurotransmitter stimulation. 
C) The spinal cord interneurons that receive a prolonged stimulus gradually come to ignore it. 
D) The thalamic centers that receive a prolonged stimulus gradually come to ignore it.

Question 5

The cochlea is

Accepted Answer

A) a coiled structure found in the inner ear. 
B) part of the organ of Corti. 
C) involved in the maintenance of body temperature. 
D) part of the middle ear. 
A) a coiled structure found in the inner ear. 
B) part of the organ of Corti. 
C) involved in the maintenance of body temperature. 
D) part of the middle ear.

Question 6

Which of the following lists structures involved only in the sense of hearing?

Accepted Answer

A) middle ear bones, semicircular canals, basilar membrane 
B) eardrum, utricle, organ of Corti 
C) oval window, cochlea, aqueous humor 
D) oval window, basilar membrane, organ of Corti 
A) middle ear bones, semicircular canals, basilar membrane 
B) eardrum, utricle, organ of Corti 
C) oval window, cochlea, aqueous humor 
D) oval window, basilar membrane, organ of Corti

Question 7

Receptors that transduce when the plasma membrane becomes more permeable to positive ions as it changes shape are called

Accepted Answer

A) pain receptors. 
B) thermoreceptors. 
C) mechanoreceptors. 
D) chemoreceptors. 
A) pain receptors. 
B) thermoreceptors. 
C) mechanoreceptors. 
D) chemoreceptors.

Question 8

Which of the following statements about the focusing of light by the eyes is true?

Accepted Answer

A) Squids and many fishes change the shape of the lens to focus light. 
B) Mammals focus light when a rigid lens is moved back and forth. 
C) Mammals use muscles and ligaments to change the shape of the lens to focus light. 
D) Mammalian lenses thicken when focused on distant objects. 
A) Squids and many fishes change the shape of the lens to focus light. 
B) Mammals focus light when a rigid lens is moved back and forth. 
C) Mammals use muscles and ligaments to change the shape of the lens to focus light. 
D) Mammalian lenses thicken when focused on distant objects.

Question 9

Which of the following statements about the humors of the eye is true?

Accepted Answer

A) The vitreous humor fills the chamber behind the lens. 
B) The vitreous humor circulates. 
C) The aqueous humor is jellylike. 
D) The humors help keep the outside of the eye moist. 
A) The vitreous humor fills the chamber behind the lens. 
B) The vitreous humor circulates. 
C) The aqueous humor is jellylike. 
D) The humors help keep the outside of the eye moist.

Question 10

Mehanoreceptors (touch)are not evenly spaced on your body. What is an advantage of having mechanoreceptors located closer together?

Accepted Answer

A) allows for less sensitivity to potentially harmful stimuli 
B) allows for a greater sensitivity to changes in temperature 
C) allows for a greater sensitivity to potentially harmful stimuli 
D) allows for less sensitivity to changes in temperature 
A) allows for less sensitivity to potentially harmful stimuli 
B) allows for a greater sensitivity to changes in temperature 
C) allows for a greater sensitivity to potentially harmful stimuli 
D) allows for less sensitivity to changes in temperature

Question 11

One of the evolutionary advantages of having two eyes is that

Accepted Answer

A) two lenses provide greater magnification. 
B) overlapping fields of view provide uninterrupted images. 
C) there are more sensory neurons for greater action potentials. 
D) the blind spot is eliminated. 
A) two lenses provide greater magnification. 
B) overlapping fields of view provide uninterrupted images. 
C) there are more sensory neurons for greater action potentials. 
D) the blind spot is eliminated.

Question 12

Vertigo is a medical term used to describe feeling dizzy, as if everything is spinning. As it can severely compromise an individual's ability to walk or stand still properly, vertigo most likely indicates a problem with the person's

Accepted Answer

A) eardrum. 
B) auditory canal. 
C) pinna. 
D) inner ear. 
A) eardrum. 
B) auditory canal. 
C) pinna. 
D) inner ear.

Question 13

The pupil of the eye is similar to what part of a camera?

Accepted Answer

A) lens 
B) aperture (light opener) 
C) film 
D) flash 
A) lens 
B) aperture (light opener) 
C) film 
D) flash

Question 14

When farsightedness develops with age (called presbyopia), the

Accepted Answer

A) lens becomes less elastic and so gradually loses its ability to focus on nearby objects. 
B) eyeball lengthens and so gradually loses its ability to focus on objects that are far away. 
C) lens becomes more elastic and so gradually loses its ability to focus on nearby objects. 
D) eyeball lengthens and so gradually loses its ability to focus on nearby objects. 
A) lens becomes less elastic and so gradually loses its ability to focus on nearby objects. 
B) eyeball lengthens and so gradually loses its ability to focus on objects that are far away. 
C) lens becomes more elastic and so gradually loses its ability to focus on nearby objects. 
D) eyeball lengthens and so gradually loses its ability to focus on nearby objects.

Question 15

Visual information is carried from the retina to the brain via

Accepted Answer

A) the optic nerve. 
B) rhodopsin. 
C) photopsins. 
D) the blind spot. 
A) the optic nerve. 
B) rhodopsin. 
C) photopsins. 
D) the blind spot.

Question 16

A molecule that is detected by our sense of smell first binds to

Accepted Answer

A) specific receptor proteins on the cilia of receptor cells located in the epithelium of the upper nasal cavity. 
B) hairs that extend beyond the mucous layer and line the upper and lower nasal cavities. 
C) special mechanoreceptor cells located in the epithelium of the lower nasal cavity. 
D) special receptor proteins located at the surface of thermoreceptor cells lining the upper nasal cavity. 
A) specific receptor proteins on the cilia of receptor cells located in the epithelium of the upper nasal cavity. 
B) hairs that extend beyond the mucous layer and line the upper and lower nasal cavities. 
C) special mechanoreceptor cells located in the epithelium of the lower nasal cavity. 
D) special receptor proteins located at the surface of thermoreceptor cells lining the upper nasal cavity.

Question 17

You exercised to the point that you were breathing heavily. Your heavy breathing was the result of ________ relaying information about the amount of O₂ in your blood to the medulla, which ultimately resulted in your increased rate of breathing.

Accepted Answer

A) mechanoreceptors 
B) electromagnetic receptors 
C) chemoreceptors 
D) thermoreceptors 
A) mechanoreceptors 
B) electromagnetic receptors 
C) chemoreceptors 
D) thermoreceptors

Question 18

Which of the following correctly lists the order of structures through which light must pass on its way to the retina of the human eye?

Accepted Answer

A) pupil, cornea, aqueous humor, lens 
B) lens, aqueous humor, pupil, cornea 
C) cornea, aqueous humor, pupil, lens 
D) cornea, pupil, aqueous humor, lens 
A) pupil, cornea, aqueous humor, lens 
B) lens, aqueous humor, pupil, cornea 
C) cornea, aqueous humor, pupil, lens 
D) cornea, pupil, aqueous humor, lens

Question 19

The retina of the eye is similar to what part of a camera?

Accepted Answer

A) lens 
B) aperture (light opener) 
C) film 
D) flash 
A) lens 
B) aperture (light opener) 
C) film 
D) flash

Question 20

The olfactory receptor cells are located in the

Accepted Answer

A) forebrain. 
B) semicircular canals. 
C) saccule. 
D) nasal cavity. 
A) forebrain. 
B) semicircular canals. 
C) saccule. 
D) nasal cavity.

Exam 29: the Senses

Which of the following statements regarding compound eyes is true?

A person whose eyeball is shorter than normal suffers from

The eyes of a planarian provide

Which of the following statements best describes the basis of sensory adaptation?

The cochlea is

Which of the following lists structures involved only in the sense of hearing?

Receptors that transduce when the plasma membrane becomes more permeable to positive ions as it changes shape are called

Which of the following statements about the focusing of light by the eyes is true?

Which of the following statements about the humors of the eye is true?

Mehanoreceptors (touch)are not evenly spaced on your body. What is an advantage of having mechanoreceptors located closer together?

One of the evolutionary advantages of having two eyes is that

Vertigo is a medical term used to describe feeling dizzy, as if everything is spinning. As it can severely compromise an individual's ability to walk or stand still properly, vertigo most likely indicates a problem with the person's

The pupil of the eye is similar to what part of a camera?

When farsightedness develops with age (called presbyopia), the

Visual information is carried from the retina to the brain via

A molecule that is detected by our sense of smell first binds to

You exercised to the point that you were breathing heavily. Your heavy breathing was the result of ________ relaying information about the amount of O₂ in your blood to the medulla, which ultimately resulted in your increased rate of breathing.

Which of the following correctly lists the order of structures through which light must pass on its way to the retina of the human eye?

The retina of the eye is similar to what part of a camera?

The olfactory receptor cells are located in the

Biology: Exploring Life

The Chemical Basis of Life

The Molecules of Cells

A Tour of the Cell

The Working Cell

How Cells Harvest Chemical Energy

Photosynthesis: Using Light to Make Food

The Cellular Basis of Reproduction and Inheritance

Patterns of Inheritance

Molecular Biology of the Gene

How Genes Are Controlled

DNA Technology and Genomics

How Populations Evolve

The Origin of Species

Tracing Evolutionary History

Microbial Life: Prokaryotes and Protists

The Evolution of Plant and Fungal Diversity

The Evolution of Invertebrate Diversity

The Evolution of Vertebrate Diversity

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Gas Exchange

Circulation

the Immune System

Control of Body Temperature and Water Balance

Hormones and the Endocrine System

Reproduction and Embryonic Development

Nervous Systems

How Animals Move

Plant Structure, Growth, and Reproduction

Plant Nutrition and Transport

Control Systems in Plants

the Biosphere: an Introduction to Earths Diverse Environments

Behavioral Adaptations to the Environment

Population Ecology

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Conservation Biology

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