01
Choose one
1 point
After a perceived threat has passed, which division most directly supports recovery, digestion, and energy conservation?
Free Practice Quiz Question List
Biological Bases of Behavior Online Quiz Questions
Use this free practice quiz with 20 questions to review Biological Bases of Behavior, test your knowledge, and prepare for your next test or exam.
20 questions
02
Choose one
1 point
A neuron has already reached threshold. If the stimulation becomes stronger, which change best reflects how action potentials are typically represented?
- A
The frequency of action potentials can increase
- B
The size of each action potential increases proportionally
- C
The neuron produces a partial action potential
- D
The axon stops conducting signals
03
Choose one
1 point
A researcher studies a brain structure that is especially important for forming and organizing many explicit memories. Which structure is the best match?
- A
The amygdala
- B
The cerebellum
- C
The hippocampus
- D
The brainstem
04
Choose all
1 point
Which two responses are most consistent with sympathetic activation during an immediate threat? Select all correct choices.
- A
Increased heart rate
- B
Promotion of digestion and energy conservation
- C
Redirection of blood flow toward skeletal muscles
- D
Reduced arousal during recovery
05
Choose all
1 point
Which two functions are consistent with the roles of glial cells? Select all correct choices.
- A
Generating every action potential in place of neurons
- B
Maintaining the chemical environment around neurons
- C
Serving only as inactive structural filler
- D
Producing myelin and helping remove cellular debris
06
True or false
1 point
The hypothalamus helps link neural regulation with endocrine regulation by influencing the pituitary gland.
- A
True
- B
False
07
True or false
1 point
If a trait has high heritability, that means the trait cannot be changed by environmental conditions.
- A
True
- B
False
08
Written response
1 point
What is the singular name of the neuron type that processes and connects information within the brain and spinal cord?
09
Written response
1 point
In the hypothalamic-pituitary-adrenal axis, which hormone is released by the adrenal cortex to help regulate energy use during stress?
10
Fill in the blank
1 point
A neuron generates an when stimulation reaches a sufficient .
11
Fill in the blank
1 point
The brain and spinal cord make up the , while neural tissue outside them makes up the .
12
Open ended
1 point
Explain how the nervous system, brain structures, and endocrine system can work together when a person hears a sudden crash at night and initially interprets it as a possible threat.
13
Choose one
1 point
Two people with different biological sensitivities experience the same stressful event, but the event affects them differently. Which concept best describes this possibility?
- A
A genetic difference causes exactly the same outcome in every environment
- B
The effect of a genetic difference varies across environments
- C
People with similar genes always choose identical environments
- D
An environmental experience changes the DNA sequence in every exposed person
14
Choose one
1 point
A neuron receives increasingly strong stimulation after reaching its firing threshold. Which pattern best describes how the neuron represents the stronger stimulation?
- A
The individual action potential becomes larger as stimulus intensity increases.
- B
The neuron produces action potentials after threshold, with stronger stimulation generally represented by a higher firing frequency.
- C
The signal reverses direction and travels from the axon terminals toward the dendrites.
- D
The neuron releases hormones directly into the bloodstream before the action potential begins.
15
Choose one
1 point
A student deliberately raises a hand in response to a question. Which division of the peripheral nervous system directly controls this voluntary skeletal-muscle movement?
- A
Autonomic nervous system
- B
Somatic nervous system
- C
Enteric nervous system
- D
Sympathetic nervous system
16
True or false
1 point
True or false: All sensory information, including information about smells, passes through the thalamus before reaching the cerebral cortex.
- A
True
- B
False
17
Choose one
1 point
A person perceives an immediate physical threat. Which response pattern is most consistent with sympathetic nervous-system activation?
- A
Increased digestion and energy conservation with reduced arousal
- B
Increased heart rate, widened airways, and redirected blood flow toward muscles
- C
Voluntary activation of skeletal muscles without changes to internal organs
- D
Regulation of digestive activity without broader changes in arousal
18
Choose one
1 point
A researcher is studying how the brain links regulation of body temperature and stress responses to hormonal control through the pituitary gland. Which structure is most directly involved?
- A
Cerebellum
- B
Thalamus
- C
Hypothalamus
- D
Corpus callosum
19
Written response
1 point
After a neurotransmitter has been released into the synaptic cleft, what process takes some of it back into the presynaptic neuron?
20
Written response
1 point
What term describes the proportion of variation in a trait within a particular population and environment that is statistically associated with genetic differences?