General Psychology Module Exam 3 | Questions and Answers Rated A+ |
Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official
Exam
OBJECTIVE ASSESSMENT - EXAM
General Psychology Module Exam
3 | Questions and Answers Rated
A+ | Latest 2026/2027 | Portage
Learning **2026/2027** -- 2026/2027
Official Exam
50 100%
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Biological Bases of Behavior Learning & Conditioning
Sensation & Perception Memory & Information Processing
States of Consciousness
COVER PAGE - 1
, SECTION 1 | Biological Bases of Behavior | Q1-Q10 | General Psychology Module Exam 3 | Questions
and Answers Rated A+ | Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official Exam
Q1 Question 1 of 50
A 28-year-old patient arrives at the emergency department after a severe electrical burn that
damaged the myelin sheath on several peripheral neurons in her left arm. Her physician explains that
nerve impulses will now travel more slowly along the affected axons. Which component of the neuron
is primarily responsible for the rapid conduction of electrical signals?
A. Dendrites, which receive incoming signals from neighboring cells
B. Myelin sheath, which insulates the axon and enables saltatory conduction
C. Cell body (soma), which integrates all incoming information before firing
D. Synaptic vesicles, which store and release chemical messengers
Correct Answer: B
Rationale:
The myelin sheath is a fatty layer that wraps around the axon, allowing electrical impulses to jump between gaps
called Nodes of Ranvier in a process called saltatory conduction, which dramatically increases signal speed.
Dendrites receive signals but do not conduct them rapidly; the soma integrates information rather than transmits
it, and synaptic vesicles are involved in chemical transmission at the synapse, not electrical conduction along the
axon.
Q2 Question 2 of 50
A neuroscientist is recording from a single neuron in a laboratory rat and observes that when the
membrane potential reaches approximately -55 mV, the neuron always fires a complete action
potential. When the stimulus is weaker and the membrane only reaches -60 mV, no action potential
occurs at all. What principle best describes this phenomenon?
A. Graded potential theory, where signal strength is proportional to stimulus intensity
B. Temporal summation, where repeated weak signals combine over time to produce a response
C. The all-or-nothing principle, where a neuron either fires completely or not at all
D. Spatial summation, where multiple inputs from different locations must combine
Correct Answer: C
Rationale:
The all-or-nothing principle states that once a neuron's membrane potential reaches the threshold
(approximately -55 mV), it fires a complete action potential of consistent amplitude; subthreshold stimuli produce
no response. Graded potentials vary in strength with stimulus intensity but this scenario specifically describes
threshold-dependent firing, and summation refers to combining multiple inputs rather than the binary firing
pattern observed.
eral Psychology Module Exam 3 | Questions and Answers Rated A+ | Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 2 o
, Q3 Question 3 of 50
A 45-year-old man diagnosed with Parkinson's disease shows significant improvement in motor
control after beginning a medication that increases dopamine levels in the brain. Which brain region
is most directly affected by this neurotransmitter enhancement?
A. Basal ganglia, which relies heavily on dopamine for regulating voluntary movement
B. Amygdala, which uses dopamine to modulate emotional responses to threats
C. Hippocampus, where dopamine facilitates the formation of new episodic memories
D. Broca's area, which depends on dopamine for coordinating speech production
Correct Answer: A
Rationale:
The basal ganglia are a group of deep brain structures critically dependent on dopamine for smooth, coordinated
voluntary movement; Parkinson's disease involves the degeneration of dopamine-producing neurons in the
substantia nigra, a part of the basal ganglia. While dopamine does play roles in other regions, the motor
symptoms of Parkinson's and their improvement with dopamine-enhancing medication are most directly linked to
basal ganglia function.
Q4 Question 4 of 50
A clinical psychologist is treating a 32-year-old woman with major depressive disorder and prescribes
a selective serotonin reuptake inhibitor (SSRI). After four weeks of treatment, the patient reports
improved mood and decreased anxiety. By what mechanism does this class of medication produce
its therapeutic effect?
A. It increases the production rate of serotonin in presynaptic neurons
B. It directly stimulates postsynaptic serotonin receptors to amplify their response
C. It blocks the enzyme that normally breaks down serotonin in the synaptic cleft
D. It blocks the reabsorption of serotonin into the presynaptic neuron, increasing its availability
Correct Answer: D
Rationale:
SSRIs work by selectively blocking the serotonin transporter protein, preventing presynaptic neurons from
reabsorbing serotonin after it has been released into the synaptic cleft, thereby increasing the concentration and
duration of serotonin available to bind to postsynaptic receptors. They do not increase serotonin production,
directly stimulate receptors, or block breakdown enzymes like MAOIs do.
Q5 Question 5 of 50
Following a car accident, a 52-year-old executive exhibits dramatic personality changes including
impulsivity, poor judgment, and difficulty planning future activities, while his language comprehension
and motor strength remain intact. Damage to which brain lobe best accounts for these specific
eral Psychology Module Exam 3 | Questions and Answers Rated A+ | Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 3 o
Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official
Exam
OBJECTIVE ASSESSMENT - EXAM
General Psychology Module Exam
3 | Questions and Answers Rated
A+ | Latest 2026/2027 | Portage
Learning **2026/2027** -- 2026/2027
Official Exam
50 100%
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Biological Bases of Behavior Learning & Conditioning
Sensation & Perception Memory & Information Processing
States of Consciousness
COVER PAGE - 1
, SECTION 1 | Biological Bases of Behavior | Q1-Q10 | General Psychology Module Exam 3 | Questions
and Answers Rated A+ | Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official Exam
Q1 Question 1 of 50
A 28-year-old patient arrives at the emergency department after a severe electrical burn that
damaged the myelin sheath on several peripheral neurons in her left arm. Her physician explains that
nerve impulses will now travel more slowly along the affected axons. Which component of the neuron
is primarily responsible for the rapid conduction of electrical signals?
A. Dendrites, which receive incoming signals from neighboring cells
B. Myelin sheath, which insulates the axon and enables saltatory conduction
C. Cell body (soma), which integrates all incoming information before firing
D. Synaptic vesicles, which store and release chemical messengers
Correct Answer: B
Rationale:
The myelin sheath is a fatty layer that wraps around the axon, allowing electrical impulses to jump between gaps
called Nodes of Ranvier in a process called saltatory conduction, which dramatically increases signal speed.
Dendrites receive signals but do not conduct them rapidly; the soma integrates information rather than transmits
it, and synaptic vesicles are involved in chemical transmission at the synapse, not electrical conduction along the
axon.
Q2 Question 2 of 50
A neuroscientist is recording from a single neuron in a laboratory rat and observes that when the
membrane potential reaches approximately -55 mV, the neuron always fires a complete action
potential. When the stimulus is weaker and the membrane only reaches -60 mV, no action potential
occurs at all. What principle best describes this phenomenon?
A. Graded potential theory, where signal strength is proportional to stimulus intensity
B. Temporal summation, where repeated weak signals combine over time to produce a response
C. The all-or-nothing principle, where a neuron either fires completely or not at all
D. Spatial summation, where multiple inputs from different locations must combine
Correct Answer: C
Rationale:
The all-or-nothing principle states that once a neuron's membrane potential reaches the threshold
(approximately -55 mV), it fires a complete action potential of consistent amplitude; subthreshold stimuli produce
no response. Graded potentials vary in strength with stimulus intensity but this scenario specifically describes
threshold-dependent firing, and summation refers to combining multiple inputs rather than the binary firing
pattern observed.
eral Psychology Module Exam 3 | Questions and Answers Rated A+ | Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 2 o
, Q3 Question 3 of 50
A 45-year-old man diagnosed with Parkinson's disease shows significant improvement in motor
control after beginning a medication that increases dopamine levels in the brain. Which brain region
is most directly affected by this neurotransmitter enhancement?
A. Basal ganglia, which relies heavily on dopamine for regulating voluntary movement
B. Amygdala, which uses dopamine to modulate emotional responses to threats
C. Hippocampus, where dopamine facilitates the formation of new episodic memories
D. Broca's area, which depends on dopamine for coordinating speech production
Correct Answer: A
Rationale:
The basal ganglia are a group of deep brain structures critically dependent on dopamine for smooth, coordinated
voluntary movement; Parkinson's disease involves the degeneration of dopamine-producing neurons in the
substantia nigra, a part of the basal ganglia. While dopamine does play roles in other regions, the motor
symptoms of Parkinson's and their improvement with dopamine-enhancing medication are most directly linked to
basal ganglia function.
Q4 Question 4 of 50
A clinical psychologist is treating a 32-year-old woman with major depressive disorder and prescribes
a selective serotonin reuptake inhibitor (SSRI). After four weeks of treatment, the patient reports
improved mood and decreased anxiety. By what mechanism does this class of medication produce
its therapeutic effect?
A. It increases the production rate of serotonin in presynaptic neurons
B. It directly stimulates postsynaptic serotonin receptors to amplify their response
C. It blocks the enzyme that normally breaks down serotonin in the synaptic cleft
D. It blocks the reabsorption of serotonin into the presynaptic neuron, increasing its availability
Correct Answer: D
Rationale:
SSRIs work by selectively blocking the serotonin transporter protein, preventing presynaptic neurons from
reabsorbing serotonin after it has been released into the synaptic cleft, thereby increasing the concentration and
duration of serotonin available to bind to postsynaptic receptors. They do not increase serotonin production,
directly stimulate receptors, or block breakdown enzymes like MAOIs do.
Q5 Question 5 of 50
Following a car accident, a 52-year-old executive exhibits dramatic personality changes including
impulsivity, poor judgment, and difficulty planning future activities, while his language comprehension
and motor strength remain intact. Damage to which brain lobe best accounts for these specific
eral Psychology Module Exam 3 | Questions and Answers Rated A+ | Latest 2026/2027 | Portage Learning **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 3 o
