Question 1

Which one of the following statements is TRUE?

Accepted Answer

A)  Cones are more sensitive to light than rods. 
B)  Rods can distinguish color. 
C)  There are three different types of cones in the human eye. 
D)  The human retina is completely covered with photoreceptors. 
A)  Cones are more sensitive to light than rods. 
B)  Rods can distinguish color. 
C)  There are three different types of cones in the human eye. 
D)  The human retina is completely covered with photoreceptors.

Question 2

Which of the following statements is TRUE?

Accepted Answer

A)  Heroin binds to endorphin receptors. 
B)  Caffeine increases the effects of neurotransmitters that normally suppress nerve signals. 
C)  Alcohol is a stimulant. 
D)  Nicotine is a depressant. 
A)  Heroin binds to endorphin receptors. 
B)  Caffeine increases the effects of neurotransmitters that normally suppress nerve signals. 
C)  Alcohol is a stimulant. 
D)  Nicotine is a depressant.

Question 3

In all types of chemoreceptors,receptor cells develop receptor potentials in response to ________.

Accepted Answer

A)  changes in the movement of the surrounding molecules 
B)  the electrical properties of the surrounding cells 
C)  chemicals dissolved in a fluid such as blood or saliva 
D)  the addition of positively charged proteins 
A)  changes in the movement of the surrounding molecules 
B)  the electrical properties of the surrounding cells 
C)  chemicals dissolved in a fluid such as blood or saliva 
D)  the addition of positively charged proteins

Question 4

The figure shows the human eye.Which part of the eye gives the eye its color?

Accepted Answer

A)  sclera 
B)  iris 
C)  pupil 
D)  retina 
A)  sclera 
B)  iris 
C)  pupil 
D)  retina

Question 5

Outnumbering neurons by up to 50 to 1,which cells protect,insulate,and reinforce neurons?

Accepted Answer

A)  sensory cells 
B)  motor cells 
C)  satellite cells 
D)  supporting cells 
A)  sensory cells 
B)  motor cells 
C)  satellite cells 
D)  supporting cells

Question 6

Arthritis is a common result of aging,affecting persons' ability to ________.

Accepted Answer

A)  catch their breath after exercise 
B)  move their joints 
C)  heal broken bones 
D)  produce red blood cells 
A)  catch their breath after exercise 
B)  move their joints 
C)  heal broken bones 
D)  produce red blood cells

Question 7

The minimum change in a membrane's voltage that must occur to trigger an action potential is called the ________.

Accepted Answer

A)  threshold 
B)  synaptic terminal 
C)  membrane potential 
D)  resting potential 
A)  threshold 
B)  synaptic terminal 
C)  membrane potential 
D)  resting potential

Question 8

The movement of an action potential along a neuron is most like ________.

Accepted Answer

A)  the ripples created by dropping a pebble into a pond, gradually decreasing in size as the waves spread apart 
B)  a crowd at a sporting event doing the wave around a stadium 
C)  a radio tower emitting a signal that reaches only a small region 
D)  the sound of your voice spreading out as you yell loudly to your friend while at a park 
A)  the ripples created by dropping a pebble into a pond, gradually decreasing in size as the waves spread apart 
B)  a crowd at a sporting event doing the wave around a stadium 
C)  a radio tower emitting a signal that reaches only a small region 
D)  the sound of your voice spreading out as you yell loudly to your friend while at a park

Question 9

If you lay your forearm along the table,you can rotate it so that your hand changes from a palm-down to a palm-up position.This is possible because your radius and ulna join at a ________ joint.

Accepted Answer

A)  ball-and-socket 
B)  hinge 
C)  pivot 
D)  twist 
A)  ball-and-socket 
B)  hinge 
C)  pivot 
D)  twist

Question 10

Which of these carry incoming messages toward the cell body of a neuron?

Accepted Answer

A)  axons 
B)  dendrites 
C)  actin filaments 
D)  supporting cells 
A)  axons 
B)  dendrites 
C)  actin filaments 
D)  supporting cells

Question 11

A thick filament is made up of ________.

Accepted Answer

A)  actin 
B)  myosin 
C)  sarcomere 
D)  actin and myosin 
A)  actin 
B)  myosin 
C)  sarcomere 
D)  actin and myosin

Question 12

Which of the following is(are)part of the central nervous system?

Accepted Answer

A)  motor system 
B)  brain and spinal cord 
C)  brain only 
D)  spinal cord only 
A)  motor system 
B)  brain and spinal cord 
C)  brain only 
D)  spinal cord only

Question 13

What part of the nervous system cushions the CNS and helps supply it with nutrients and hormones,and carries away wastes?

Accepted Answer

A)  cerebrospinal fluid 
B)  spinal cord 
C)  interneurons 
D)  the bones of the skull 
A)  cerebrospinal fluid 
B)  spinal cord 
C)  interneurons 
D)  the bones of the skull

Question 14

A neuron can relay a more intense signal by ________.

Accepted Answer

A)  sending a stronger action potential 
B)  sending more action potentials in a given amount of time 
C)  sending an action potential that travels more quickly 
D)  sending a longer action potential 
A)  sending a stronger action potential 
B)  sending more action potentials in a given amount of time 
C)  sending an action potential that travels more quickly 
D)  sending a longer action potential

Question 15

Alzheimer's disease is characterized by ________.

Accepted Answer

A)  mental deterioration, memory loss, and personality changes 
B)  extreme mood swings 
C)  loss of energy and suicidal thoughts 
D)  increased energy and extreme talkativeness 
A)  mental deterioration, memory loss, and personality changes 
B)  extreme mood swings 
C)  loss of energy and suicidal thoughts 
D)  increased energy and extreme talkativeness

Question 16

The two major divisions of the nervous system are the ________.

Accepted Answer

A)  sympathetic and parasympathetic 
B)  central nervous system (CNS) and peripheral nervous system (PNS) 
C)  sensory and motor 
D)  voluntary and involuntary 
A)  sympathetic and parasympathetic 
B)  central nervous system (CNS) and peripheral nervous system (PNS) 
C)  sensory and motor 
D)  voluntary and involuntary

Question 17

Which of the following is an example of sensory adaptation of receptors?

Accepted Answer

A)  going into deep sleep 
B)  distinguishing between different colors 
C)  ignoring the shoes on your feet 
D)  detecting sound and light simultaneously 
A)  going into deep sleep 
B)  distinguishing between different colors 
C)  ignoring the shoes on your feet 
D)  detecting sound and light simultaneously

Question 18

Scenario Questions
Please read the following paragraph and then answer the following questions.
The human eye is an incredible organ, capable of gathering light to focus on images near and far, in bright light or dim, and with quick adjustments between these extremes. However, eyes can develop problems, such as floaters, which are small particles that interfere with the transmission of light between the lens and the retina, and bloodshot eyes, which occur when irritants such as dust or smoke get in the eye.
-Eyes can become bloodshot when irritants in the eye trigger an increased blood flow to the connective tissue covering the eye.These swollen blood vessels are located on the ________.

Accepted Answer

A)  cornea 
B)  sclera 
C)  iris 
D)  lens 
A)  cornea 
B)  sclera 
C)  iris 
D)  lens

Question 19

You start to trip,but you keep your balance and don't fall.Which of the following brain regions is responsible for the rapid coordination of muscle activity that kept you from falling?

Accepted Answer

A)  cerebral cortex 
B)  thalamus 
C)  cerebellum 
D)  cerebrum 
A)  cerebral cortex 
B)  thalamus 
C)  cerebellum 
D)  cerebrum

Question 20

A person who cannot focus well on distant objects has ________.

Accepted Answer

A)  farsightedness 
B)  nearsightedness 
C)  astigmatism 
D)  cataracts 
A)  farsightedness 
B)  nearsightedness 
C)  astigmatism 
D)  cataracts

Exam 27: Nervous, Sensory, and Locomotor Systems

Which one of the following statements is TRUE?

Which of the following statements is TRUE?

In all types of chemoreceptors,receptor cells develop receptor potentials in response to ________.

The figure shows the human eye.Which part of the eye gives the eye its color?

Outnumbering neurons by up to 50 to 1,which cells protect,insulate,and reinforce neurons?

Arthritis is a common result of aging,affecting persons' ability to ________.

The minimum change in a membrane's voltage that must occur to trigger an action potential is called the ________.

The movement of an action potential along a neuron is most like ________.

If you lay your forearm along the table,you can rotate it so that your hand changes from a palm-down to a palm-up position.This is possible because your radius and ulna join at a ________ joint.

Which of these carry incoming messages toward the cell body of a neuron?

A thick filament is made up of ________.

Which of the following is(are)part of the central nervous system?

What part of the nervous system cushions the CNS and helps supply it with nutrients and hormones,and carries away wastes?

A neuron can relay a more intense signal by ________.

Alzheimer's disease is characterized by ________.

The two major divisions of the nervous system are the ________.

Which of the following is an example of sensory adaptation of receptors?

You start to trip,but you keep your balance and don't fall.Which of the following brain regions is responsible for the rapid coordination of muscle activity that kept you from falling?

A person who cannot focus well on distant objects has ________.

Introduction: Biology Today

Essential Chemistry for Biology

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy from Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells from Cells

Patterns of Inheritance

The Structure and Function of DNA

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Body's Defenses

Hormones

Reproduction and Development

The Life of a Flowering Plant

The Working Plant

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