In a protein molecule, various amino acids are linked together by

(1) b-glycosidic bond

(2) Peptide bond

(3) Dative bond

(4) a-glycosidic bond

Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

(a) Thyroxin                (b) Insulin

(c) Adrenaline             (d) Estradiol

Deficiency of vitamin B₁ causes the disease

(1) Convulsions

(2) Beri-beri

(3) Cheilosis

(4) Sterility

Which one of the following sets of monosaccharides forms sucrose?
(1) a-D-galactopyranose and
     a-D-glucopyranose
(2) α-D-glucopyranose and
     b-D-fructofuranose
(3) b-D -glucopyranose and
     a-D fructofuranose
(4) α-D-glucopyranose and
     b-D-fructopyranose

Which one of the following does not exhibit the phenomenon of mutarotation ?

(a) (+) Sucrose

(b) (+) Lactose

(c) (+)Maltose

(d) (-)Fructose

A hormone that contains iodine is-

During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process

$\mathrm{Proteins} \stackrel{\mathrm{Enzyme} \left(\mathrm{a}\right)}{\to } \mathrm{Polypeptides} \stackrel{\mathrm{Enzyme} \left(\mathrm{B}\right)}{\to } \mathrm{Amino} \mathrm{acids},$

are respectively:
(a) amylase and maltase
(b) diastase and lipase
(c) pepsin and trypsin
(d) invertase and zymase

The human body does not produce

(1) DNA

(2) vitamins

(3) hormones

(4) enzymes

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

Which of the following carbohydrate undergo mutarotation in aqueous solution?

(1)  Maltose

(2)  Lactose

(3)  Glucose

(4)  All of these