The greatest buffering capacity at physiologic pH would be provided by a protein rich in which of the following amino acids ? (A) Lysine (B) Histidine (C) Aspartic acid (D) Valine

1 Answer

Answer :

Answer : B

Related questions

Description : Neutral amino acid is (A) Leucine (B) Lysine (C) Aspartic acid (D) Histidine

Last Answer : Answer : A

Description : Which one of the amino acids could serve as the best buffer at pH 7? (A) Glutamic acid (B) Arginine (C) Valine (D) Histidine

Last Answer : Answer : D

Description : Amino acids excepting histidine are not good buffering agents in cell because (A) They exist as zwitter ions (B) Their pk and not in the physiological pH of a cell (C) Only Histidine has pk of its R group at 6.0 unlike the others which have at a different pH (D) None of these

Last Answer : Answer : C

Description : The amino acids in which the R groups have a net positive charge at pH 7.0 are (A) Lysine, Arginine, Histidine (B) Lysine, Aspargine (C) Histidine, Aspargine (D) Glutamine, Arginine

Last Answer : Answer : A

Description : All α-amino acids have one asymmetric carbon atom except (A) Arginine (B) Glycine (C) Aspartic acid (D) Histidine

Last Answer : Answer : B

Description : Buffering action of haemoglobin is mainly due to its (A) Glutamine residues (B) Arginine residues (C) Histidine residues (D) Lysine residues

Last Answer : Answer : C

Description : α-helix is disrupted by certain amino acids like (A) Proline (B) Arginine (C) Histidine (D) Lysine

Last Answer : Answer : A

Description : A vasodilating compound is produced by the decarboxylation of the amino acid: (A) Arginine (B) Aspartic acid (C) Glutamine (D) Histidine

Last Answer : Answer : D

Description : Soyabean proteins are rich in (A) Lysine (B) Alanine (C) Glcyine (D) Aspartic acid

Last Answer : Answer : B

Description : The amino acid which synthesizes many hormornes: (A) Valine (B) Phenylalanine (C) Alanine (D) Histidine

Last Answer : Answer : B

Description : The amino acid which synthesizes many hormones: (A) Valine (B) Phenyl alanine (C) Alanine (D) Histidine

Last Answer : Answer : B

Description : One of the following amino acid is solely ketogenic: (A) Lysine (B) Alanine (C) Valine (D) Glutamate

Last Answer : Answer : A

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

Last Answer : Answer : B

Description : Which of the following amino acid has been shown as one of the active site of phosphoglucomutase? (A) Lysine (B) Tyrosine (C) Serine (D) Histidine

Last Answer : Answer : C

Description : The neutral amino acid is (A) Lysine (B) Proline (C) Leucine (D) Histidine

Last Answer : Answer : C

Description : An amino acid not found in proteins is (A) β-Alanine (B) Proline (C) Lysine (D) Histidine

Last Answer : Answer : A

Description : Identify the basic amino acid from the following. (a) Tyrosine (b) Glutamic Acid (c) Lysine (d) Valine

Last Answer : (c) Lysine

Description : Which of the following amino acid participate in urea cycle?(a) Argininie (b) Lysine (c) Tryptophan (d) Histidine

Last Answer : (a) Argininie

Description : Modern bread is formed with amino acid (a) Histidine (b) Lysine (c) Leucine (d) All

Last Answer : (d) All

Description : The following 4 amino acids are required for completion of urea cycle except (A) Aspartic acid (B) Arginine (C) Ornithine (D) Glycine

Last Answer : Answer : D

Description : Corn and gliadin are low in (A) Lysine (B) Alanine (C) Glycine (D) Aspartic acid

Last Answer : Answer : D

Description : Which of the following amino acids was not found to be synthesised in Miller’s experiment? (a) Alanine (b) Glycine (c) Aspartic acid (d) Glutamic acid (

Last Answer : (d) Glutamic acid

Description : The α-carbon of all the amino acids is a chirality center except for __________. (a) Glycine (b) Threonine (c) Proline (d) Aspartic acid

Last Answer : Glycine

Description : Which of the following amino acids has a heterocyclic R group? (a) Glycine (b) Threonine (c) Proline (d) Aspartic acid

Last Answer : Proline

Description : One of the given example is an amino acid: (A) Oh-Lysine (B) Protein (C) Leucine (D) Serine

Last Answer : Answer : B

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

Last Answer : Answer : A

Description : All the following amino acids are optically active except (A) Tryptophane (B) Phenylalanine (C) Valine (D) Glycine

Last Answer : Answer : D

Description : Most amino acids are substrates for transamination except (A) Alanine (B) Threonine (C) Serine (D) Valine

Last Answer : Answer : B

Description : Branched chain amino acids are (A) Cysteine and cystine (B) Tyrosine and Tryptophan (C) Glycine and Serine (D) Valine, Leucine and Isoleucine

Last Answer : Answer : D

Description : All the following are branched chain amino acids except (A) Isoleucine (B) Alanine (C) Leucine (D) Valine

Last Answer : Answer : B

Description : Electrostatic bonds can be formed between the side chains of (A) Alanine and leucine (B) Leucine and valine (C) Asparate and glutamate (D) Lysine and aspartate

Last Answer : Answer : D

Description : Which of the following amino acids produce a vasoconstrictor on decarboxylation? (A) Histidine (B) Tyrosine (C) Threonine (D) Arginine

Last Answer : Answer : B

Description : All the following amino acids are nonessential except (A) Alanine (B) Histidine (C) Cysteine (D) Proline

Last Answer : Answer : B

Description : All amino acids have one asymmetric carbon atom, except (A) Arginine (B) Aspargine (C) Histidine (D) Glycine

Last Answer : Answer : D

Description : Histones are (A) Identical to protamine (B) Proteins rich in lysine and arginine (C) Proteins with high molecular weight (D) Insoluble in water and very dilute acids

Last Answer : Answer : B

Description : One of the following has a phenolic group: (A) Histidine (B) Hydroxy lysine (C) Seratonine (D) Hydroxy proline

Last Answer : Answer : C

Description : Sulphur is made available to the body by the amino acids: (A) Cystine and methionine (B) Taurine and alanine (C) Proline and hydroxyproline (D) Arginine and lysine MINERAL METABOLISM 191

Last Answer : Answer : A

Description : The basic amino acids are (A) Lysine (B) Bile acids (C) Glycine (D) Alanine

Last Answer : Answer : A

Description : The amino acids involved in the synthesis of creatin are (A) Arginine, glycine, active methionine (B) Arginine, alanine, glycine (C) Glycine, lysine, methionine (D) Arginine, lysine, methionine

Last Answer : Answer : A

Description : Collagen is very rich in (A) Glycine (B) Serine (C) Aspartic acid (D) Glutamic acid

Last Answer : Answer : A

Description : The pH of body fluids is stabilized by buffer systems. The compound which will be the most effective buffer at physiologic pH is (A) Na2HPO4 pKa = 12.32 (B) Na2HPO4 pKa=7.21 (C) NH4OH pKa = 7.24 (D) Citric acid pKa = 3.09

Last Answer : Answer : B

Description : A hexa peptide with 5 aspartic acid would have a net charge at pH 7: (A) Neutral (B) Positive (C) Negative (D) Not predictable

Last Answer : Answer : C

Description : Since the pK values for aspartic acid are 2.0, 3.9 and 10.0, it follows that the isoelectric (pH) is (A) 3.0 (B) 3.9 (C) 5.9 (D) 6.0

Last Answer : Answer : A

Description : Since the pK values for aspartic acid are 2.0, 3.9 and 10.0, it follows that the isoelectric (pH) is (A) 3.0 (B) 3.9 (C) 5.9 (D) 6.0

Last Answer : (A) 3.0

Description : Aspartate amino transferase uses the following for transamination: (A) Glutamic acid and pyruvic acid (B) Glutamic acid and oxaloacetic acid (C) Aspartic acid and pyruvic acid (D) aspartic acid and keto adipic acid

Last Answer : Answer : B

Description : Pantothenic acid contains an amino acid which is (A) Aspartic acid (B) Glutamic acid (C) β-Alanine (D) β-Aminoisobutyric acid

Last Answer : Answer : C

Description : Which among the following is an essential amino acid? (A) Cysteine (B) Leucine (C) Tyrosine (D) Aspartic acid

Last Answer : Answer : B

Description : A molecule of CO2 is captured by biotin when it acts as coenzyme for carboxylation reaction. The carboxyl group is covalently attached to (A) A nitrogen (N1) of the biotin molecule (B) Sulphur of thiophene ring (C) α-Amino group of lysine (D) α-Amino group of protein

Last Answer : Answer : A

Description : In biotin-containing enzymes, the biotin is bound to the enzyme by (A) An amide linkage to carboxyl group of glutamine (B) A covalent bond with CO2 (C) An amide linkage to an amino group of lysine (D) An amide linkage to α-carboxyl group of protein

Last Answer : Answer : C

Description : Golden rice is a transgenic crop of the future with the following improved trait (a) insect resistance (b) high lysine (essential amino acid) content (c) high protein content (d) high vitamin-A content.

Last Answer : (d) high vitamin-A content.