20 Questions
Which type of ligands can cross the plasma membrane and bind to intracellular receptors?
Lipid-soluble ligands
What do receptors act as in cell signaling?
Signal transducers
Where are plasma membrane receptors located?
In the plasma membrane
What are the two categories of ligands based on their solubility?
Hydrophilic and hydrophobic ligands
What are the different types of membrane receptors mentioned in the text?
Ion-channel linked receptors, G-protein coupled receptors, catalytic receptors, and regulated intramembrane proteolysis
Which type of receptors mediate direct and rapid synaptic signaling between electrically excitable cells?
Ion-channel linked receptors
Which of the following ligands can activate G-protein coupled receptors?
Odorants
What is the function of G-protein coupled receptors?
Change the ionic permeability and membrane potential of the cell
Which of the following is NOT a component of G-protein coupled receptors?
Ion channel
Which type of proteins regulate gene expression, cell proliferation, and differentiation?
Small monomeric G proteins
Which type of GTPases is involved in nucleocytoplasmic transport of RNA and proteins?
Ran GTPases
Which type of receptors possess enzymatic activity or are associated with and regulate an enzyme?
Catalytic receptors
Which cellular processes are regulated by Rho GTPases?
All of the above
Which type of receptors are often protein kinases or associated with protein kinases?
Catalytic receptors
What is the function of regulated intramembrane proteolysis (RIP)?
Release of transcription factors through proteolytic cleavage
Which of the following substances specifically interact with intracellular receptors?
Steroid hormones
What processes reduce or terminate the response of a target cell to a hormone by decreasing the number of receptors?
Downregulation and desensitization
How does downregulation of receptors occur?
Both A and B
What is the function of upregulation and sensitization of receptors?
Increase the response of a cell to low concentrations of messengers
Which of the following is NOT a type of intracellular receptor?
Membrane receptors
Test your knowledge of ligands and receptors with this quiz! Learn about the different types of ligands, how they bind to receptors, and their role in cell communication. Perfect for biology enthusiasts and students.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
