Multiple Choice
Which statement about signaling receptors is true?
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10. Cell Signaling
Classes of Signaling Receptors
Multiple Choice
Which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?
A
Receptor tyrosine kinase.
B
G protein-coupled receptor.
C
Ligand-gated ion channel.
D
Steroid receptor.
E
Intracellular receptor.
Verified step by step guidance1
Understand the function of each receptor type: Receptor tyrosine kinases, G protein-coupled receptors, ligand-gated ion channels, steroid receptors, and intracellular receptors.
Receptor tyrosine kinases are involved in phosphorylation cascades, not directly in ion distribution.
G protein-coupled receptors activate secondary messengers, which can indirectly affect ion channels but do not directly change ion distribution.
Ligand-gated ion channels open or close in response to a ligand binding, allowing ions to move across the membrane, directly changing ion distribution.
Steroid and intracellular receptors typically influence gene expression and do not directly alter ion distribution across membranes.
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