Description : An amino acid that does not form an αhelix is (A) Valine (B) Proline (C) Tyrosine (D) Tryptophan
Last Answer : Answer : B
Description : An essential amino acid in man is (A) Proline (B) Threonine (C) Asparagine (D) Tyrosine
Description : An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline
Last Answer : Answer : A
Description : The amino acid which gives yellow colour with Ninhydrin in paper chromatography is (A) Tyrosine (B) Proline (C) Tryptophan (D) Alanine
Description : An amino acid that does not take part in α helix formation is (A) Histidine (B) Tyrosine (C) Proline (D) Tryptophan
Last Answer : Answer : C
Description : Millon’s test is for identification of (A) Tyrosine (B) Tryptophan (C) Proline (D) Arginine
Description : In the A chain of insulin molecule the Cterminal amino acid is (A) Asparagine (B) Threonine (C) Valine (D) Tyrosine
Description : Which one of the following is an essential amino acid? (A) Arginine (B) Tyrosine (C) Phenylalanine (D) Proline
Description : Hormones thyroxine, adrenaline and the pigment melanin are formed from (a) tyrosine (b) proline (c) tryptophan (d) glycine.
Last Answer : (a) tyrosine
Description : Which of the following is the simplest amino acid? (a) Alanine (b) Asparagine (c) Glycine (d) Tyrosine
Last Answer : (c) Glycine
Description : The biosynthesis of both Catecholamine and serotonin require (A) Tyrosine hydroxylase (B) N-methyl transferase (C) Aromatic amino acid decarboxylase (D) Tryptophan pyrrolase
Description : Which among the following is a nutritionally essential amino acid for man ? (A) Alanine (B) Glycine (C) Tyrosine (D) Tryptophan
Last Answer : Answer : D
Description : The limiting amino acid of rice is (A) Lysine (B) Tryptophan (C) Phenylalanine (D) Tyrosine
Description : Million-Nasse’s reaction is specific for the amino acid: (A) Tryptophan (B) Tyrosine (C) Phenylalanine (D) Arginine
Description : Which one of the following is sulphur-containing amino acid? (A)Tryptophan (B) Cystine (C) Proline (D) Lysine
Last Answer : (B) Cystine
Description : Which of the following amino acids has a sulfur in the R group? (a) Serine (b) Cysteine (c) Asparagine (d) Tyrosine
Last Answer : Tyrosine
Description : Which of the following amino acids has an aromatic R group? (a) Serine (b) Cysteine (c) Asparagine (d) Tyrosine
Description : Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan
Description : Side chains of all amino acids contain aromatic rings except (A) Pheynl alanine (B) Alanine (C) Tyrosine (D) Tryptophan
Description : Branched chain amino acids are (A) Cysteine and cystine (B) Tyrosine and Tryptophan (C) Glycine and Serine (D) Valine, Leucine and Isoleucine
Description : Homogentisic acid is formed from (A) Homoserine (B) Homocysteine (C) Tyrosine (D) Tryptophan
Description : Xanthuric acid is an abnormal metabolite of (A) Xanthine (B) Uric acid (C) Tyrosine (D) Tryptophan
Description : Which among the following has an imidazole group? (A) Histidine (B) Tryptophan (C) Proline (D) Hydroxy proline
Description : All of the following statements about aspartate are true except (A) It is non-essential amino acid (B) It is a dicarboxylic amino acid (C) It can be synthesized from pyruvate and glutamate (D) It can be converted into asparagine
Description : The amino acid with a nonpolar side chain is (A) Serine (B) Valine (C) Asparagine (D) Threonine
Description : Sulphur containing amino acid is (A) Methionine (B) Leucine (C) Valine (D) Asparagine
Last Answer : (A) Methionine
Description : In the synthesis of Angiotensin I, rennin acts on Angiotensinogen and cleaves the (A) Leucine – leucine at 10 and 11 position (B) Valine – tyrosine at 3 and 4 position (C) Isoleucine – histidine at 5 and 6 position (D) Proline – histidine at 7 and 8 position
Description : The deficiency of copper decreases the activity of the enzyme: (A) Lysine oxidase (B) Lysine hydroxylase (C) Tyrosine oxidase (D) Proline hydroxylase
Description : Million’s test is positive for (A) Phenylalanine (B) Glycine (C) Tyrosine (D) Proline
Description : Sakaguchi’s reaction is specific for (A) Tyrosine (B) Proline (C) Arginine (D) Cysteine
Description : Adrenalin is synthesized from (A) Adenine (B) Adenosine (C) Tyrosine (D) Tryptophan 230 MCQs IN BIOCHEMISTRY
Description : Melatonin is synthesised from (A) Phenylalanine (B) Tyrosine (C) Tryptophan (D) None of these
Description : Niacin can be synthesised in human beings from (A) Histidine (B) Phenylalanine (C) Tyrosine (D) Tryptophan
Description : The proteins present in maize are deficient in (A) Lysine (B) Threonine (C) Tryptophan (D) Tyrosine
Description : Niacin is synthesized in the body from (A) Tryptophan (B) Tyrosine (C) Glutamate (D) Aspartate
Description : The sparing action of methionine is (A) Tyrosine (B) Cystine (C) Arginine (D) Tryptophan
Description : Hopkins-Cole test is for identification of (A) Tyrosine (B) Tryptophan (C) Arginine (D) Cysteine
Description : Serotonin is synthesised from (A) Serine (B) Phenylalanine (C) Tyrosine (D) Tryptophan
Description : A ketogenic amino acid among the following is (A) Leucine (B) Serine (C) Threonine (D) Proline
Description : In the B chain of insulin molecule, the Nterminal amino acid is (A) Proline (B) Threonine (C) Phenylalanine (D) Lysine
Description : An amino acid required for porphyrin synthesis is (A) Proline (B) Glycine (C) Serine (D) Histidine
Description : Hemoglobin has a high content of this amino acid: (A) Proline (B) Leucine (C) Arginine (D) Histicline
Description : The basic amino acid: (A) Glycine (B) Leucine (C) Histidine (D) Proline
Description : The neutral amino acid is (A) Lysine (B) Proline (C) Leucine (D) Histidine
Description : Which among the following is a basic amino acid? (A) Aspargine (B) Arginine (C) Proline (D) Alanine
Description : An amino acid having a hydrophilic side chain is (A) Alanine (B) Proline (C) Methionine (D) Serine
Description : The amino acid from which synthesis of the protein of hair keratin takes place is (A) Alanine (B) Methionine (C) Proline (D) Hydroxyproline
Description : An amino acid not found in proteins is (A) β-Alanine (B) Proline (C) Lysine (D) Histidine
Description : For synthesis of CTP and UTP, the amino group comes from (A) Amide group of Asparagine (B) Amide group of glutamine (C) α-Amino group of glutamine (D) α-Amino group of glutamate