Cell Surface Receptors – Modes of Cell Communication
About the Lecture
The lecture Cell Surface Receptors – Modes of Cell Communication by Georgina Cornwall, PhD is from the course Cellular Structure.
Included Quiz Questions
Which of the following statements are CORRECT regarding chemically gated ion channels? Select all that apply.
- Chemically gated ion channels participate in the transport of ions in and out of cells.
- Chemically gated ion channels consist of multipass transmembrane proteins that allow the passage of hydrophilic molecules across cell membranes.
- These channels do not require signal ligands to regulate the transmembrane flows of ions.
- These channels allow the smooth passage of larger hydrophobic molecules across the membrane.
- These cell surface receptors are single-pass peripheral membrane proteins.
Which of the following statements regarding cell surface receptors is INCORRECT?
- Chemically gated ion channels are phosphorylated by a GTP molecule in response to the binding of a ligand.
- Chemically gated ion channels, enzymatic receptors, and G protein–coupled receptors are cell surface receptors for cell communication.
- A better understanding of G protein–coupled receptors helps identify drug targets in the signal transduction pathway.
- G protein–coupled receptors are activated by GTP.
- Enzymatic and G protein–coupled receptors have an indirect effect within a cell in the presence of a second messenger.
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Author of lecture Cell Surface Receptors – Modes of Cell Communication
Georgina Cornwall, PhD
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