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

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
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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 : 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

Last Answer : Answer : C

Each turn of α-helix contains the amino acid residues (number): (A) 3.6 (B) 3.0 (C) 4.2 (D) 4.5

Description : Each turn of α-helix contains the amino acid residues (number): (A) 3.6 (B) 3.0 (C) 4.2 (D) 4.5

Last Answer : Answer : A

The number of amino acid residues in calcitonin in (A) 9 (B) 32 (C) 51 (D) 84

Description : The number of amino acid residues in calcitonin in (A) 9 (B) 32 (C) 51 (D) 84

Last Answer : Answer : B

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 : 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

Last Answer : Answer : C

Proinsulin has (A) 74 amino acids (B) 86 amino acids (C) 105 amino acids (D) 109 amino acids

Description : Proinsulin has (A) 74 amino acids (B) 86 amino acids (C) 105 amino acids (D) 109 amino acids

Last Answer : Answer : B

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

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

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Description : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Last Answer : 22

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 : 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

Last Answer : Answer : D

Number of amino acid residues in glucagons is (A) 29 (B) 34 (C) 51 (D) 84

Description : Number of amino acid residues in glucagons is (A) 29 (B) 34 (C) 51 (D) 84

Last Answer : Answer : A

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 : 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

Last Answer : Answer : A

The number of amino acid residues in PTH: (A) 51 (B) 84 (C) 90 (D) 115

Description : The number of amino acid residues in PTH: (A) 51 (B) 84 (C) 90 (D) 115

Last Answer : Answer : B

Number of amino acid residues in prolactin is (A) 51 (B) 84 (C) 191 (D) 198

Description : Number of amino acid residues in prolactin is (A) 51 (B) 84 (C) 191 (D) 198

Last Answer : Answer : D

Number of amino acid residues in human growth hormone is (A) 51 (B) 84 (C) 191 (D) 198

Description : Number of amino acid residues in human growth hormone is (A) 51 (B) 84 (C) 191 (D) 198

Last Answer : Answer : C

The number of amino acid residues in preproinsulin is (A) 51 (B) 84 (C) 109 (D) 119

Description : The number of amino acid residues in preproinsulin is (A) 51 (B) 84 (C) 109 (D) 119

Last Answer : Answer : C

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 : 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

Last Answer : Answer : A

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 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

Last Answer : Answer : A

The half-life of a protein depends upon its (A) Signal sequence (B) N-terminus amino acid (C) C-terminus amino acid (D) Prosthetic group

Description : The half-life of a protein depends upon its (A) Signal sequence (B) N-terminus amino acid (C) C-terminus amino acid (D) Prosthetic group

Last Answer : Answer : B

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

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)

Which of the following sequences has helped in identifying eukaryotes, eubacteria and A- Signature sequence B- Signal sequence C- Shine-Dalgarno sequence D- Amino acid sequence

Description : Which of the following sequences has helped in identifying eukaryotes, eubacteria and A- Signature sequence B- Signal sequence C- Shine-Dalgarno sequence D- Amino acid sequence

Last Answer : Signature sequence

Which of the following sequences has helped in identifying eukaryotes, eubacteria and archeabacterial cell types? A- Signature sequence B- Signal sequence C- Shine-Dalgarno sequence D- Amino acid sequence

Description : Which of the following sequences has helped in identifying eukaryotes, eubacteria and archeabacterial cell types? A- Signature sequence B- Signal sequence C- Shine-Dalgarno sequence D- Amino acid sequence

Last Answer : Signature sequence

A protein rich in hydroxyproline is (A) Prolamin (B) Procollagen (C) Collagen (D) Proinsulin

Description : A protein rich in hydroxyproline is (A) Prolamin (B) Procollagen (C) Collagen (D) Proinsulin

Last Answer : Answer : C

What is proinsulin?

Description : What is proinsulin?

Last Answer : Insulin is synthesised as a large single polypeptide. Middle part of it is then removed, to form the A and B chains of insulin.

The number of amino acids in antidiuretic hormone is (A) 9 (B) 18 (C) 27 (D) 36

Description : The number of amino acids in antidiuretic hormone is (A) 9 (B) 18 (C) 27 (D) 36

Last Answer : Answer : A

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 : 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

Last Answer : Answer : A

All of the following are required for hydroxylation of proline residues except (A) Ascorbic acid (B) Glutamate (C) Ferrous ions (D) Molecular oxygen

Description : All of the following are required for hydroxylation of proline residues except (A) Ascorbic acid (B) Glutamate (C) Ferrous ions (D) Molecular oxygen

Last Answer : Answer : B

Insertion of a base in a gene can cause (A) Change in reading frame (B) Garbled amino acid sequence in the encoded protein (C) Premature termination of translation (D) All of these

Description : Insertion of a base in a gene can cause (A) Change in reading frame (B) Garbled amino acid sequence in the encoded protein (C) Premature termination of translation (D) All of these

Last Answer : Answer : D

Amino acid sequence of the encoded protein is not changed in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Both (A) and (B) (D) None of these

Description : Amino acid sequence of the encoded protein is not changed in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

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 : 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

Last Answer : Answer : B

Different isoenzymes of an enzyme have the same (A) Amino acid sequence (B) Michaelis constant (C) Catalytic activity (D) All of these

Description : Different isoenzymes of an enzyme have the same (A) Amino acid sequence (B) Michaelis constant (C) Catalytic activity (D) All of these

Last Answer : Answer : C

Amino acid sequence directs protein folding?

Description : Insulin possesses two polypeptide chains denoted A and B that are linked by disulfide bonds. Upon denaturation by reduction of the SH groups of insulin, followed by reoxidation, only 7% of the ... can these data be reconciled with the hypothesis that the amino acid sequence directs protein folding?

Last Answer : Insulin is synthesized as preproinsulin that is proteolytically processed in the β cells of the islets of Langerhans in the pancreas, to give proinsulin. After synthesis and folding, a section of the ... lacking the C peptide, lacks some of the information necessary to direct the folding process. 

A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from restits speed after 3 seconds wil be a.10.9 rad/sec b.19.0 rad/sec c.51.2 rad/sec d.3.33 rad/sec e.16.35 rad/sec

Description : A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from restits speed after 3 seconds wil be a.10.9 rad/sec b.19.0 rad/sec c.51.2 rad/sec d.3.33 rad/sec e.16.35 rad/sec

Last Answer : d. 3.33 rad/sec

I-cell disease results from absence of the following from lysosomal enzymes: (A) Signal sequence (B) Mannose-6-phosphate (C) Sialic acid (D) A serine residue

Description : I-cell disease results from absence of the following from lysosomal enzymes: (A) Signal sequence (B) Mannose-6-phosphate (C) Sialic acid (D) A serine residue

Last Answer : Answer : D

Which of the following statements is not correct? (a) In man insulin is synthesised as a proinsulin. (b) The proinsulin has an extra peptide called C-peptide. (c) The functional insulin has A and B chains linked together by hydrogen bonds. (d) Genetically engineered insulin is produced in E.Coli.

Description : Which of the following statements is not correct? (a) In man insulin is synthesised as a proinsulin. (b) The proinsulin has an extra peptide called C-peptide. (c) The functional insulin has A and B chains linked together by hydrogen bonds. (d) Genetically engineered insulin is produced in E.Coli.

Last Answer : (c) The functional insulin has A and B chains linked together by hydrogen bonds.

Human insulins are obtained by the following sources/methods except: A. Cadaver pancreas B. Proinsulin recombinant bacterial C. Precursor yeast recombinant D. Enzyme modification of **** insulin

Description : Human insulins are obtained by the following sources/methods except: A. Cadaver pancreas B. Proinsulin recombinant bacterial C. Precursor yeast recombinant D. Enzyme modification of pork insulin

Last Answer : . Cadaver pancreas

Number of carbon atoms in cholesterol is (A) 17 (B) 19 (C) 27 (D) 30

Description : Number of carbon atoms in cholesterol is (A) 17 (B) 19 (C) 27 (D) 30

Last Answer : Answer : C

How do you find the nth term for the sequence 3 9 27 81 243?

Description : How do you find the nth term for the sequence 3 9 27 81 243?

Last Answer : According to Wittgenstein's Finite Rule Paradox every finite sequence of numbers can be a described in infinitely many ways - some simple, some complicated but all equally valid. One possible rule isT(n) = (2*n4 - 16*n3 + 52*n2 - 68*n + ... n = 1, 2, 3, ...Another is U(n) = 3n for n = 1, 2, 3, ...

Folic acid contains (A) Pteridine (B) p-Amino benzoic acid (C) Glutamic acid (D) All of these

Description : Folic acid contains (A) Pteridine (B) p-Amino benzoic acid (C) Glutamic acid (D) All of these

Last Answer : Answer : D

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

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

The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Cystine (D) Tryptophan

Description : The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Cystine (D) Tryptophan

Last Answer : Answer : D

Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0

Description : Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0

Last Answer : Answer : C

An amino acid which contains a disulphide bond is (A) Lysine (B) Methionine (C) Homocysteine (D) Cystine

Description : An amino acid which contains a disulphide bond is (A) Lysine (B) Methionine (C) Homocysteine (D) Cystine

Last Answer : Answer : D

The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Glycine (D) Tryptophan

Description : The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Glycine (D) Tryptophan

Last Answer : Answer : D

The amino acid which contains a guanidine group is (A) Histidine (B) Arginine (C) Citrulline (D) Ornithine

Description : The amino acid which contains a guanidine group is (A) Histidine (B) Arginine (C) Citrulline (D) Ornithine

Last Answer : Answer : B

Secretin is made up of (A) 17 amino acids (B) 27 amino acids (C) 37 amino acids (D) 47 amino acids

Description : Secretin is made up of (A) 17 amino acids (B) 27 amino acids (C) 37 amino acids (D) 47 amino acids

Last Answer : Answer : B

The number of amino acids in pre-pro insulin is (A) 51 (B) 86 (C) 109 (D) 132

Description : The number of amino acids in pre-pro insulin is (A) 51 (B) 86 (C) 109 (D) 132

Last Answer : Answer : C

What is the number that comes next in the sequence? 2, 5, 9, 19, 37, __ (A) 76 (B) 74 (C) 75 (D) 50

Description : What is the number that comes next in the sequence? 2, 5, 9, 19, 37, __ (A) 76 (B) 74 (C) 75 (D) 50

Last Answer : Answer: C

Insulin is a dimmer. The number of amino acids in the A and B chain respectively is (A) 19 and 28 (B) 21 and 30 (C) 25 and 35 (D) 29 and 38

Description : Insulin is a dimmer. The number of amino acids in the A and B chain respectively is (A) 19 and 28 (B) 21 and 30 (C) 25 and 35 (D) 29 and 38

Last Answer : Answer : B

Number of amino acids present in the dietary proteins: (A) 22 (B) 23 (C) 20 (D) 19

Description : Number of amino acids present in the dietary proteins: (A) 22 (B) 23 (C) 20 (D) 19

Last Answer : Answer : C

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

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

Blue print for genetic information residues in (A) mRNA (B) tRNA (C) rRNA (D) DNA

Description : Blue print for genetic information residues in (A) mRNA (B) tRNA (C) rRNA (D) DNA

Last Answer : Answer : D