Bio Flashcards
In the synthesis of nitric oxide, which of the following set of cofactors are required?
A) NADPH, FAD, FMN, heme, and tetrahydrobiopterin ✅
B) NADPH, FAD, FMN and tetrahydrobiopterin
C) NADPH, FAD, FMN and heme.
D) NADPH, FAD, heme and tetrahydrobiopterin.
E) NADPH and tetrahydrobiopterin.
.Alpha-Bungarotoxin, a toxin present in the snake venom , inhibit which of the following receptor?
A) Glycine.
B) Muscarinic.
C) Nicotinic ✅ D) Epinephrine E) Dopamine.
.Which of the following neuretransmitter acts exclusively through metabotropie
receptors?
A) Acetylcholine ✅
B) Gamma amino butyric acid C) Glutamate.
D) Dopamine.
E) Aspartate
.Which of the following toxin increases the cAMP by ADP-RibosyLation of G’as subunit ?
A) Pertusis.
B) Cholera ✅
C) Tubocrarine. D) Strychnine E) Atropine.
which of the following metabolize the dopamine? MAO
-bungarotoxcin effect is?
Inhibit peripheral nicotinic receptor
.
In the synthesis of nitric oxide, which of the following set of cofactors are required?
A) NADPH, FAD, FMN, heme, and tetrahydrobiopterin ✅
B) NADPH, FAD, FMN and tetrahydrobiopterin
C) NADPH, FAD, FMN and heme.
D) NADPH, FAD, heme and tetrahydrobiopterin.
E) NADPH and tetrahydrobiopterin.
WOTF G-protein is RibosyLated by cholera?
G’as ✅
-cholera toxin cause ADP- rybosylation of which G-protein subunit?
Gs ✅
-WOTF require s-adynosil methionine for its formation?
Epinephrine ✅
-which of the following is not a secondary messenger { ?
adenylate cyclase ✅
which of the following neurotransmitters is pure inhibitory beside GABA { ?
Glycine ✅
What occur when cAMP activates protein kinase A after binding NE to the receptor ?
Phsphorylation of certain proteins and enzymes ✅
.WOTF groups are monoamines?
Serotonin NE Epinephrine ✅
WOTF Neurotransmitters is excitatory ?
Glutamate ✅
WOTF enzymes convert Inositol diphisphate 3,4 into Inositol triphosphate 1,3,4 and DAG
?
Phospholypase C ✅
