Activation or inactivation of certain key regulatory enzymes is accomplished by covalent modification of the amino acid: (A) Tyrosine (B) Phenylalanine (C) Lysine (D) Serine

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Answer :

Answer :  D

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Last Answer : (a) serine and isoleucine

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Last Answer : (b) cysteine and valine

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Description : Which one of the following is semiessential amino acid for humans? (A) Valine (B) Arginine (C) Lysine (D) Tyrosine

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Description : An aromatic amino acid is (A) Lysine (B) Tyrosine (C) Taurine (D) Arginine

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Description : An aromatic amino acid is (A) Lysine (B) Tyrosine (C) Taurine (D) Arginine

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Last Answer : Answer: CD DISCUSSION: Alanine is released from skeletal muscle and extracted by the liver, where it is converted to new glucose. Glutamine is also released from muscle and participates in ... these two amino acids account for approximately two thirds of the nitrogen released from skeletal muscle

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Description : Pulses are rich in (A) Lysine (B) Methionine (C) Tryptophan (D) Phenylalanine

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Description : Carnitine is synthesized from (A) Lysine (B) Serine (C) Choline (D) Arginine

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Description : An –OH group is present in the side chain of (A) Serine (B) Arginine (C) Lysine (D) Proline

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Description : Neonatal tyrosinemia is due to deficiency of the enzyme: (A) p-Hydroxyphenylpyruvate hydroxylase (B) Fumarylacetoacetate hydrolase (C) Phenylalanine hydroxylase (D) Tyrosine dehydrogenase

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