Description : Number of amino acid residues in prolactin is (A) 51 (B) 84 (C) 191 (D) 198
Last Answer : Answer : D
Description : Number of amino acid residues in glucagons is (A) 29 (B) 34 (C) 51 (D) 84
Last Answer : Answer : A
Description : The number of amino acid residues in PTH: (A) 51 (B) 84 (C) 90 (D) 115
Last Answer : Answer : B
Description : The number of amino acid residues in preproinsulin is (A) 51 (B) 84 (C) 109 (D) 119
Last Answer : Answer : C
Description : The number of amino acid residues in calcitonin in (A) 9 (B) 32 (C) 51 (D) 84
Description : Insulin is made up of (A) A single polypeptide chain having 51 amino acid residues (B) A single polypeptide chain having 84 amino acid residues (C) A-chain having 21 and B-chain having 30 amino acid residues (D) A-chain having 30 and B-chain having 21 amino acid residues
Description : The number of amino acids in human growth hormone is (A) 91 (B) 151 (C) 191 (D) 291
Description : CRH is a polypeptide made up of (A) 39 amino acids (B) 41 amino acids (C) 51 amino acids (D) 84 amino acids
Description : ACTH is a polypeptide made up of (A) 39 amino acids (B) 41 amino acids (C) 51 amino acids (D) 84 amino acids
Description : Edman’s reaction can be used to (A) Determine the number of tyrosine residues in a protein (B) Determine the number of aromatic amino acid residues in a protein (C) Determine the amino acid sequence of a protein (D) Hydrolyse the peptide bonds in a protein
Description : Each turn of α-helix contains the amino acid residues (number): (A) 3.6 (B) 3.0 (C) 4.2 (D) 4.5
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
Description : Glycoproteins are marked for destruction by removal of their (A) Oligosaccharide prosthetic group (B) Sialic acid residues (C) Mannose residues (D) N-terminal amino acids
Description : Amino acid residues which are essential for the biological activity of PTH are (A) N-terminal 34 amino acids (B) N-terminal 50 amino acids (C) C-terminal 34 amino acids (D) C-terminal 50 amino acids
Description : Pre-proinsulin contains a signal sequence having (A) 9 amino acid residues (B) 19 amino acid residues (C) 27 amino acid residues (D) 33 amino acid residues
Description : Chymotrypsin is specific for peptide bonds containing (A) Uncharged amino acid residues (B) Acidic amino acids (C) Basic amino acid (D) Small amino acid residues
Description : The enzyme trypsin is specific for peptide bonds of (A) Basic amino acids (B) Acidic amino acids (C) Aromatic amino acids (D) Next to small amino acid residues
Description : The following are true about parathyroid hormone a. it is an 84 amino acid peptide hormone b. it increases calcium absorption from the gastrointestinal tract c. it acts on a cell surface receptor that increases intracellular cyclic AMP d. all above
Last Answer : all above
Description : The sequence of amino acids in human growth hormone and the synthesis were done by (A) Sanger (B) Krebs (C) Chah Holi (D) Molisch
Description : The covalent bond that is repeatedly present between different amino acid residues in a protein is called (a) p-bond (b) hydrogen bond (c) peptide bond (d) metallic bond
Last Answer : Ans:(c)
Description : The sequence of amino acid in which the biological value of parathormone is (A) 1–15 (B) 1–34 (C) 30–50 (D) 50–84
Description : Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY
Description : The number of amino acids in parathormone is (A) 65 (B) 84 (C) 115 (D) 122
Description : The number of amino acids in pre-pro insulin is (A) 51 (B) 86 (C) 109 (D) 132
Description : Glycosphingolipids are a combination of (A) Ceramide with one or more sugar residues (B) Glycerol with galactose (C) Sphingosine with galactose (D) Sphingosine with phosphoric acid
Description : All of the following are required for hydroxylation of proline residues except (A) Ascorbic acid (B) Glutamate (C) Ferrous ions (D) Molecular oxygen
Description : An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline
Description : Adrenocorticotropic hormone (ACTH) is a single polypeptide containing (A) 25 amino acid (B) 39 amino acid (C) 49 amino acid (D) 52 amino acid 208 MCQs IN BIOCHEMISTRY
Description : With regard to insulin: a. it is a 51 amino acid peptide b. it is formed by removal of C-chain from proinsulin c. it is produced by the alpha cells of the pancreas d. it alters the rate of enzyme synthesis
Last Answer : it alters the rate of enzyme synthesis
Description : The first protein synthesized by recombinant DNA technology was (A) Streptokinase (B) Human growth hormone (C) Tissue plasminogen activator (D) Human insulin
Description : Human growth hormone has (A) One polypeptide chain and one intra-chain disulphide bond (B) One polypeptide chain and two intra-chain disulphide bond (C) Two polypeptide chains joined by one disulphide bond (D) Two polypeptide chains joined by two disulphide bond
Description : A limiting amino acid is an essential amino acid (A) That is most deficient in proteins (B) That is most excess in proteins (C) That which increases the growth (D) That which increases the weight gain
Description : Number of guanine and cytosine residues is equal in (A) mRNA (B) tRNA (C) DNA (D) None of these
Description : The number of amino acids in the peptide hormone calcitonin is (A) 16 (B) 24 (C) 32 (D) 40
Description : Thyroid stimulating hormone is a dimer. The α-subunits of TSH, LH, FSH are identical. Thus the biological specificity must therefore be β subunit in which the number of amino acids is (A) 78 (B) 112 (C) 130 (D) 199
Description : The number of amino acids in antidiuretic hormone is (A) 9 (B) 18 (C) 27 (D) 36
Description : The number of amino acids in the hormone oxytocin is (A) 7 (B) 9 (C) 14 (D) 18
Description : Buffering action of haemoglobin is mainly due to its (A) Glutamine residues (B) Arginine residues (C) Histidine residues (D) Lysine residues
Description : Blue print for genetic information residues in (A) mRNA (B) tRNA (C) rRNA (D) DNA
Description : Zinc finger motif is formed in some proteins by binding of zinc to (A) Two cysteine residues (B) Two histidine residues (C) Two arginine residues (D) Two cysteine and two histidine residues or two pairs of two cysteine residues each
Description : Leucine zipper motif is seen in some helical proteins when leucine residues appear at every (A) 3rd position (B) 5th position (C) 7th position (D) 9th position
Description : Ultraviolet light can damage a DNA strand causing (A) Two adjacent purine residue to form a covalently bounded dimer (B) Two adjacent pyrimidine residues to form covalently bonded dimer (C) Disruption of phosphodiesterase linkage (D) Disruption of non-covalent linkage
Description : In thyroxine, tyrosine residues are iodinated at positions: (A) 1 and 3 (B) 2 and 4 (C) 3 and 5 (D) 4 and 6
Description : Thyroperoxidase iodinates (A) Free tyrosine in thyroid gland (B) Tyrosine residues of thyroglobulin (C) Tyrosine residues of thyroxine binding globulin (D) Tyrosine residues of thyroxine binding prealbumin
Description : The tyrosine residues per molecule of thyroglobulin is (A) 85 (B) 95 (C) 115 (D) 135
Description : Bonds that are formed between two cysteine residues is (A) Disulphide (B) Peptide (C) Electrostatic (D) Hydrophobic
Description : Collagen and elastin have the following similarity: (A) Both are triple helices (B) Both have hydroxyproline residues (C) Both have hydrolysine residues (D) Both are glycoproteins
Description : All the following statement about hydroxyproline are true except (A) There is no codon for hydroxyproline (B) It is present in large amounts in collagen (C) Free proline cannot be hydroxylated to hydroxyproline (D) Hydroxylation of proline residues is catalysed by a dioxygenase
Description : A disulphide bond can be formed between (A) Two methionine residues (B) Two cysteine residues (C) A methionine and a cysteine residue (D) All of these
Description : In glycoproteins, carbohydrate residues are attached to which group of the polypeptide chain?
Last Answer : Hydroxyl group of serine or threonine.