α-helix is also known as

(1)  Sheet structure

(2)  Flat structure

(3)  3.613 helix

(4)  4.915 helix

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 54%
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Insulin and carboxypeptidase contains respectively

(1)  Cu, Zn

(2)  An, Cu

(3)  Cu, Cu

(4)  Zn, Zn

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
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The structural feature which distinguishes proline from other natural a-amino acids is

1.  It is optically inactive

2.  It contains an aromatic group

3.  It is a dicarboxylic acid

4.  It is a secondary amine

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 52%
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Hormone that contains iodine is :

1. Insulin

2. Testosterone

3. Adrenaline

4. Thyroxine

Subtopic:  Vitamins, Hormones & Enzymes |
 90%
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The vitamin which causes impotency is

(1) Calciferol

(2) Biotin

(3) Tocopherol

(4) Retinol

Subtopic:  Vitamins, Hormones & Enzymes |
 73%
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Millon's test is given by that protein

1.  Which contain phenolic amino acids

2.  Which contain amino acid having S

3.  Which contain the basic amino acid

4.  Which contain the neutral amino acid

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
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The pKa1, pKa2 and pka3 of the dication of lysine H3N+ - CH24 - CH - COOH             |             +NH3 are 2.18, 8.95 and 10.53 respectively. Calculate the pH of lysine at its isoelectric point.

1.  9.74

2.  7.22

3.  5.57

4.  6.36

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
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Which of the following carbohydrates is not oxidized by bromine water?

1.  D - Galactose

2.  D - Glucose

3.  D - Fructose

4.  D - Mannose

Subtopic:  Polysaccharides & their Importance |
 54%
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Which of the following carbohydrate undergo mutarotation in aqueous solution?

(1)  Maltose

(2)  Lactose

(3)  Glucose

(4)  All of these

Subtopic:  Carbohydrates - Classification & D-L configuration |
 94%
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Sanger's reagent is used for the identification of

(1)  The N-terminal amino acid of a peptide chain

(2)  The c-terminal amino acid of a peptide chain

(3)  The sidechain of amino acids

(4)  Number of amino acid units

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 55%
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