Psychopharm Exam 1 Questions And Correct Answers
A serotonin molecule binds to a 5HT2A receptor causing electrical impulses to be sent
down a GABA neuron's axon terminal, eventually releasing GABA to the GABA-A
receptor of its postsynaptic neuron. What type of neurotransmission is this describing?
A. Classic synaptic neurotransmission
B. Retrograde neurotransmission
C. Volume neurotransmission
D. Signal transduction cascade - ANSWER A. Classic synaptic neurotransmission
Communication between human CNS neurons at synapses is:
A. Chemical
B. Electrical - ANSWER A. Chemical
The direct role of transcription factors is to:
A. Cause neurotransmitter release
B. Influence gene expression
C. Synthesize enzymes
D. Trigger signal transduction cascades - ANSWER B. Influence gene expression
What is epigenetics?
A. Acquired trait resulting from a change in DNA sequence
B. Acquired trait resulting from a change in gene expression
C. Heritable trait resulting from a change in DNA sequence
D. Heritable trait resulting from a change in gene expression - ANSWER D. Heritable
trait resulting from a change in gene expression
, Presynaptic reuptake transporters are a major method of inactivation for which of the
following?
A. Serotonin
B. Serotonin, dopamine
C. Serotonin, dopamine, norepinephrine
D. None of the above. - ANSWER C. Serotonin, dopamine, norepinephrine
What is constitutive activity?
A. Signal transduction when an agonist is bound to the receptor
B. Receptor signal transduction in the presence of an antagonist to the receptor
C. Receptor signal transduction in the presence of an inverse agonist bound to the
receptor
D. Receptor signal transduction in the absence of agonist or inverse agonist bound to
the receptor - ANSWER D. Receptor signal transduction in the absence of agonist or
inverse agonist bound to the receptor
A partial agonist exerts a net effect of which of the following on neurotransmission?
A. Agonism when neurotransmission is inadequate
B. Antagonism when neurotransmission is excessive
C. A and B
D. Neither A nor B - ANSWER C. A and B
A receptor with four transmembrane regions changes conformation as GABA binds.
Which system is this process describing?
A. Presynaptic transporter
B. Ligand-gated ion channel
C. Voltage-sensitive ion channel - ANSWER B. Ligand-gated ion channel
The known receptor sites for ligand-gated ion channels are:
A serotonin molecule binds to a 5HT2A receptor causing electrical impulses to be sent
down a GABA neuron's axon terminal, eventually releasing GABA to the GABA-A
receptor of its postsynaptic neuron. What type of neurotransmission is this describing?
A. Classic synaptic neurotransmission
B. Retrograde neurotransmission
C. Volume neurotransmission
D. Signal transduction cascade - ANSWER A. Classic synaptic neurotransmission
Communication between human CNS neurons at synapses is:
A. Chemical
B. Electrical - ANSWER A. Chemical
The direct role of transcription factors is to:
A. Cause neurotransmitter release
B. Influence gene expression
C. Synthesize enzymes
D. Trigger signal transduction cascades - ANSWER B. Influence gene expression
What is epigenetics?
A. Acquired trait resulting from a change in DNA sequence
B. Acquired trait resulting from a change in gene expression
C. Heritable trait resulting from a change in DNA sequence
D. Heritable trait resulting from a change in gene expression - ANSWER D. Heritable
trait resulting from a change in gene expression
, Presynaptic reuptake transporters are a major method of inactivation for which of the
following?
A. Serotonin
B. Serotonin, dopamine
C. Serotonin, dopamine, norepinephrine
D. None of the above. - ANSWER C. Serotonin, dopamine, norepinephrine
What is constitutive activity?
A. Signal transduction when an agonist is bound to the receptor
B. Receptor signal transduction in the presence of an antagonist to the receptor
C. Receptor signal transduction in the presence of an inverse agonist bound to the
receptor
D. Receptor signal transduction in the absence of agonist or inverse agonist bound to
the receptor - ANSWER D. Receptor signal transduction in the absence of agonist or
inverse agonist bound to the receptor
A partial agonist exerts a net effect of which of the following on neurotransmission?
A. Agonism when neurotransmission is inadequate
B. Antagonism when neurotransmission is excessive
C. A and B
D. Neither A nor B - ANSWER C. A and B
A receptor with four transmembrane regions changes conformation as GABA binds.
Which system is this process describing?
A. Presynaptic transporter
B. Ligand-gated ion channel
C. Voltage-sensitive ion channel - ANSWER B. Ligand-gated ion channel
The known receptor sites for ligand-gated ion channels are:
