Intracellular Receptors – Modes of Cell Communication
About the Lecture
The lecture Intracellular Receptors – Modes of Cell Communication by Georgina Cornwall, PhD is from the course Cellular Structure.
Included Quiz Questions
Select all that apply from the options below. Ligands that elicit their effects through intracellular receptors...
- ...are hydrophobic molecules.
- ...can bind directly to the receptor, which binds to DNA to elicit an effect.
- ...need a channel protein to access the cell.
- ...bind to receptors either in the cytoplasm or in the nucleus.
- ...bind only to receptors within the nucleus, closer to DNA.
Which of the following statements is NOT correct regarding intracellular receptors?
- The dilation of penile blood vessels due to high levels of cGMP is the mechanism underlying erectile dysfunction.
- Three functional domains determine the activity of gene expression in regulating intracellular receptors.
- Viagra selectively inhibits a cGMP-specific phosphodiesterase enzyme in the penis to maintain high cGMP levels.
- Nitric oxide causes dilation of blood vessels and symptom relief in patients experiencing chest pain.
- Steroid hormones pass through cell membranes and bind to intracellular receptors to control gene expression.
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Author of lecture Intracellular Receptors – Modes of Cell Communication
Georgina Cornwall, PhD
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