The enzyme _____________________ is the rate-limiting step in serotonin synthesi
ID: 3471946 • Letter: T
Question
The enzyme _____________________ is the rate-limiting step in serotonin synthesis.
Tryptophan hydroxylase
Tyrosine hydroxylase
Glutamine synthase
Glutamic acid decarboxylase
2.
The amino acid _____________ is the precursor for the three amine neurotransmitters known as the catecholamines.
Arginine
Tyrosine
Glutamate
Histidine
a.Tryptophan hydroxylase
b.Tyrosine hydroxylase
c.Glutamine synthase
d.Glutamic acid decarboxylase
2.
The amino acid _____________ is the precursor for the three amine neurotransmitters known as the catecholamines.
a.Arginine
b.Tyrosine
c.Glutamate
d.Histidine
Explanation / Answer
1. The correct answer is option A
Explanation : Tryptophan Hydroxylase is the first rate limiting step for the synthesis of serotonin. It converts 5-hydroxytryptophan to serotonin.
2.The correct answer is option B
Explanation : Tyrosine is the precursor for the catecholamines
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