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Questions and Answers
Which receptor family is responsible for the regulation of the flow of ions across the cell membrane?
Which receptor family is responsible for the regulation of the flow of ions across the cell membrane?
- G protein-coupled receptors
- Enzyme-linked receptors
- Ligand-gated ion channels (correct)
- Intracellular receptors
What is the characteristic duration of response to stimulation of enzyme-linked receptors?
What is the characteristic duration of response to stimulation of enzyme-linked receptors?
- Milliseconds
- Seconds
- Minutes to hours (correct)
- Days
Which receptor family comprises a single helical peptide with seven membrane-spanning regions?
Which receptor family comprises a single helical peptide with seven membrane-spanning regions?
- Intracellular receptors
- Enzyme-linked receptors
- G protein-coupled receptors (correct)
- Ligand-gated ion channels
How does the duration of response to ligand-gated ion channels compare to that of intracellular receptors?
How does the duration of response to ligand-gated ion channels compare to that of intracellular receptors?
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Which receptor family requires the ligand to diffuse into the cell for interaction?
Which receptor family requires the ligand to diffuse into the cell for interaction?
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As drug concentration increases, what happens to its pharmacologic effect according to the graded dose-response relationship?
As drug concentration increases, what happens to its pharmacologic effect according to the graded dose-response relationship?
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