Question 1

Which statement about the auditory functioning of the cochlea is false?

Accepted Answer

A)  The flexing of the round window follows the flexing of the oval window in a delayed fashion. 
B)  The hair cells on the organ of Corti move against the rigid tectorial membrane. 
C)  The intensity of the sound determines how many hair cells will be stimulated. 
D)  The frequency of the sound determines which hair cells will be stimulated. 
E)  Lower-frequency sounds result in the stimulation of hair cells closer to the round window. 
A)  The flexing of the round window follows the flexing of the oval window in a delayed fashion. 
B)  The hair cells on the organ of Corti move against the rigid tectorial membrane. 
C)  The intensity of the sound determines how many hair cells will be stimulated. 
D)  The frequency of the sound determines which hair cells will be stimulated. 
E)  Lower-frequency sounds result in the stimulation of hair cells closer to the round window.

Question 2

In humans, if the apical end of the basilar membrane (where pressure waves have traveled the farthest) is damaged, would be the likely result?

Accepted Answer

A)  High-frequency sounds would not be detected 
B)  Low-frequency sounds would not be detected 
C)  The tympanic membrane would not transmit sound waves 
D)  Motion sickness 
E)  Conduction deafness 
A)  High-frequency sounds would not be detected 
B)  Low-frequency sounds would not be detected 
C)  The tympanic membrane would not transmit sound waves 
D)  Motion sickness 
E)  Conduction deafness

Question 3

Which behavior results from the adaptation of sensory cells?

Accepted Answer

A)  Going into a deep sleep 
B)  Discriminating different colors 
C)  Ignoring your shoes as you walk 
D)  Detecting high-pitched notes 
E)  Detecting sound and light simultaneously 
A)  Going into a deep sleep 
B)  Discriminating different colors 
C)  Ignoring your shoes as you walk 
D)  Detecting high-pitched notes 
E)  Detecting sound and light simultaneously

Question 4

Which statement comparing the eyes of arthropods and the eyes of vertebrates is false?

Accepted Answer

A)  An arthropod eye has many optical units, while a vertebrate eye has one optical unit. 
B)  The eyes of vertebrates produce detailed images, and the eyes of arthropods provide information about patterns in the environment. 
C)  The number of ommatidia in a compound eye varies dramatically among arthropods, but all vertebrate eyes have a single optical unit. 
D)  A vertebrate eye has a single narrow-angle lens, and an arthropod eye has many wide-angle lenses. 
E)  The images formed by arthropod eyes have low resolution compared with the high-resolution images formed by vertebrate eyes. 
A)  An arthropod eye has many optical units, while a vertebrate eye has one optical unit. 
B)  The eyes of vertebrates produce detailed images, and the eyes of arthropods provide information about patterns in the environment. 
C)  The number of ommatidia in a compound eye varies dramatically among arthropods, but all vertebrate eyes have a single optical unit. 
D)  A vertebrate eye has a single narrow-angle lens, and an arthropod eye has many wide-angle lenses. 
E)  The images formed by arthropod eyes have low resolution compared with the high-resolution images formed by vertebrate eyes.

Question 5

Hair cells have projections called _______ that open ion channels when they bend in one direction and close ion channels when they bend in the opposite direction.

Accepted Answer

The answer of Hair cells have projections called _______ that...

Question 6

_______ are generated in the stretch receptor of a crayfish when the muscle to which it is attached is stretched.

Accepted Answer

The answer of _______ are generated in the stretch receptor...

Question 7

Pheromones-chemical signals that carry information-can signal from _______ to _______.

Accepted Answer

A)  one neuron; another neuron 
B)  the peripheral nervous system; the central nervous system 
C)  a female; a male of the same species 
D)  parasite; host 
E)  prey; predator 
A)  one neuron; another neuron 
B)  the peripheral nervous system; the central nervous system 
C)  a female; a male of the same species 
D)  parasite; host 
E)  prey; predator

Question 8

Which statement about olfaction is false?

Accepted Answer

A)  Humans can discriminate many more odorants than there are olfactory receptors. 
B)  Each olfactory receptor neuron expresses only one type of receptor. 
C)  Different regions of a complex odorant molecule can bind to different receptor proteins. 
D)  Each glomerulus in the olfactory bulb contains axons from olfactory receptor neurons that express different receptor proteins. 
E)  Each olfactory receptor protein is found in a limited number of olfactory receptor neurons in the nasal epithelium. 
A)  Humans can discriminate many more odorants than there are olfactory receptors. 
B)  Each olfactory receptor neuron expresses only one type of receptor. 
C)  Different regions of a complex odorant molecule can bind to different receptor proteins. 
D)  Each glomerulus in the olfactory bulb contains axons from olfactory receptor neurons that express different receptor proteins. 
E)  Each olfactory receptor protein is found in a limited number of olfactory receptor neurons in the nasal epithelium.

Question 9

Refer to the figure, which shows the human eye.   As we age, the structure labeled _______ becomes less elastic and we lose the ability to focus on close objects.

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Exam 45: Sensory Systems

Which statement about the auditory functioning of the cochlea is false?

In humans, if the apical end of the basilar membrane (where pressure waves have traveled the farthest) is damaged, would be the likely result?

Which behavior results from the adaptation of sensory cells?

Which statement comparing the eyes of arthropods and the eyes of vertebrates is false?

Hair cells have projections called _______ that open ion channels when they bend in one direction and close ion channels when they bend in the opposite direction.

_______ are generated in the stretch receptor of a crayfish when the muscle to which it is attached is stretched.

Pheromones-chemical signals that carry information-can signal from _______ to _______.

Which statement about olfaction is false?

Refer to the figure, which shows the human eye. As we age, the structure labeled _______ becomes less elastic and we lose the ability to focus on close objects.

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Communication and Multicellularity

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinant Dna and Biotechnology

Mechanisms of Evolution

Reconstructing and Using Phylogenies

Speciation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

The Evolution and Diversity of Fungi

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons, Glia, and Nervous Systems

The Mammalian Nervous System: Structure and Higher Functions

Musculoskeletal Systems

Gas Exchange

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen Excretion

Animal Behavior

The Physical Environment and Biogeography of Life

Populations

Species Interactions

Communities

Ecosystems

A Changing Biosphere

Filters

Pheromones-chemical signals that carry information-can signal from _ to _.