Quiz 3 Flashcards
(22 cards)
During signal transduction G-protein activates what?
adenylate cyclase
Acetylcholine affects the cells through what following type of signal transduction?
ion-linked channel
The following type of signal transduction operates in seconds?
ion-linked/G-protein coupled channel & ion-channel receptors
Increase in the number of surface receptors is called what?
up regulation
System of amplification is typical for what following type of signal transduction?
G-protein coupled
During signal transduction cAMP activates what?
phosphokinase (PKA)
The following is the largest family of cell-surface receptors (>1000)?
G-protein coupled
The following type of signal transduction operates in minutes?
transmembrane receptor protein
T or F: Common architecture of the transmembrane receptors - large extracellular binding domain?
TRUE
T or F: All G-proteins evolved from a common evolutionary precursor?
TRUE
The following type of signal transduction operates in seconds?
ion-channel receptors
Morphine affects the cells through what following type of signal transduction?
G-protein coupled receptors
T or F: Multiple ligands can result in activation of the same pathway?
TRUE
Epinephrine affects the cells through what following type of signal transduction?
G-protein coupled receptor
What following type of signal transduction operates in hours-days?
intracellular receptors
Insulin affects the cells through what following type of signal transduction?
transmembrane
The following scientist introduced the term - receptor?
Paul Ehrlich
T or F: Steroid ligands activate genes in the cytoplasm?
FALSE
During signal transduction adenylate (adenylyl) cyclase activates what?
cAMP
Decrease in number of surface receptors is called what?
down regulation
T or F: One ligand can result in activation of multiple signal pathways?
TRUE
During signal transduction protein kinase activates what?
calcium channels
