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PRACTICE
Unit 2 (Statistics) Unit 3A (Neuronal & Hormonal Systems)
Unit 2 (Statistics)
1. The most frequently occurring score in a distribution of scores is the:
A) mode.
B) median.
C) standard deviation.
D) mean.
2. The mean of a distribution of scores is the:
A) most frequently occurring score.
B) arithmetic average of all the scores.
C) least frequently occurring score.
D) score exceeded by 50 percent of all the scores.
3. The median of a distribution of scores is the:
A) most frequently occurring score.
B) difference between the highest and lowest scores.
C) arithmetic average of all the scores.
D) score exceeded by 50 percent of all the scores.
4. Which measure of central tendency is used to calculate your grade-point average?
A) standard deviation
B) median
C) mean
D) mode
5. A lopsided set of scores that includes a number of extreme or unusual values is said to
be:
A) symmetrical.
B) normal.
C) skewed.
D) dispersed.
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6. In a distribution of test scores, which measure of central tendency would likely be the
most affected by a couple of extremely high scores?
A) median
B) range
C) mode
D) standard deviation
E) mean
7. The difference between the highest and lowest scores in a distribution is the:
A) mean.
B) range.
C) median.
D) standard deviation.
E) percentile rank.
8. Which of the following is a measure of the degree of variation among a set of events?
A) mean
B) scatterplot
C) standard deviation
D) normal distribution
E) correlation coefficient
Unit 3 (Neuroscience)
9. A biological psychologist would be most interested in the relationship between:
A) body chemistry and violent behavior.
B) skull shape and character traits.
C) self-esteem and popularity.
D) brain size and cell structure.
10. The person most likely to suggest that the shape of a person's skull indicates the extent
to which that individual is argumentative and aggressive would be a:
A) neurologist.
B) behavior geneticist.
C) psychoanalyst.
D) phrenologist.
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11. Who would have been most likely to claim that a slight protrusion in a certain region of
someone's skull indicated that the individual had an optimistic personality?
A) Aristotle
B) Carl Wernicke
C) John Locke
D) Franz Gall
12. Sir Charles Sherrington observed that impulses took more time to travel a neural
pathway than he might have anticipated. His observation provided evidence for the
existence of:
A) association areas.
B) synaptic gaps.
C) interneurons.
D) neural networks.
13. The function of dendrites is to:
A) receive incoming signals from other neurons.
B) release neurotransmitters into the spatial junctions between neurons.
C) coordinate the activation of the parasympathetic and sympathetic nervous systems.
D) control pain through the release of opiatelike chemicals into the brain.
14. In transmitting sensory information to the brain, an electrical signal within a single
neuron travels from the:
A) cell body to the axon to the dendrites.
B) dendrites to the axon to the cell body.
C) axon to the cell body to the dendrites.
D) dendrites to the cell body to the axon.
E) axon to the dendrites to the cell body.
15. A brief electrical charge that travels down the axon of a neuron is called the:
A) synapse.
B) agonist.
C) action potential.
D) myelin sheath.
E) refractory period.
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16. Resting potential is to action potential as ________ is to ________.
A) parasympathetic nervous system; sympathetic nervous system
B) sensory neuron; motor neuron
C) synapse; neural network
D) polarization; depolarization
17. A synapse is a(n):
A) chemical messenger that triggers muscle contractions.
B) automatic response to sensory input.
C) neural network.
D) junction between a sending neuron and a receiving neuron.
E) neural cable containing many axons.
18. The chemical messengers released into the spatial junctions between neurons are called:
A) hormones.
B) neurotransmitters.
C) synapses.
D) genes.
19. Increasing excitatory signals above the threshold for neural activation will not affect the
intensity of an action potential. This indicates that a neuron's reaction is:
A) inhibited by the myelin sheath.
B) delayed by the refractory period.
C) an all-or-none response.
D) dependent on neurotransmitter molecules.
20. Neurotransmitters are released from vesicles located in knoblike terminals on the:
A) dendrites.
B) cell body.
C) axon.
D) myelin sheath.
21. A drug that blocks the reuptake of a particular neurotransmitter is called a(n):
A) opiate.
B) antagonist.
C) glutamate.
D) agonist.
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22. Reuptake refers to the:
A) movement of neurotransmitter molecules across a synaptic gap.
B) binding of neurotransmitter molecules to dendritic receptor sites.
C) inflow of partially charged ions through an axon membrane.
D) reabsorption of excess neurotransmitter molecules by a sending neuron.
23. Schizophrenia is most closely linked with excess receptor activity for the
neurotransmitter:
A) dopamine.
B) epinephrine.
C) acetylcholine.
D) serotonin.
24. An undersupply of serotonin is most closely linked to:
A) Alzheimer's disease.
B) schizophrenia.
C) Parkinson's disease.
D) depression.
25. Opiate drugs occupy the same receptor sites as:
A) acetylcholine.
B) serotonin.
C) endorphins.
D) dopamine.
E) epinephrine.
26. Which of the following chemical messengers is both a neurotransmitter and a hormone?
A) serotonin
B) acetylcholine
C) norepinephrine
D) dopamine
E) insulin
27. The two major divisions of the nervous system are the central and the ________ nervous
systems.
A) autonomic
B) sympathetic
C) parasympathetic
D) peripheral
E) endocrine
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28. The central nervous system consists of:
A) sensory and motor neurons.
B) somatic and autonomic subsystems.
C) the brain and the spinal cord.
D) sympathetic and parasympathetic branches.
29. Heartbeat acceleration is to heartbeat deceleration as the ________ nervous system is to
the ________ nervous system.
A) somatic; autonomic
B) autonomic; somatic
C) central; peripheral
D) sympathetic; parasympathetic
E) parasympathetic; sympathetic
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