Match List-I with List-II. [2022]
| List-I (Biological molecules): | List-II (Biological functions): | ||
| A | Glycogen | (i) | Hormone |
| B | Globulin | (ii) | Biocatalyst |
| C | Steroids | (iii) | Antibody |
| D | Thrombin | (iv) | Storage product |
Choose the correct answer from the options given below:
(A)-(iii), (B)-(ii), (C)-(iv), (D)-(i)
(A)-(iv), (B)-(ii), (C)-(i), (D)-(iii)
(A)-(ii), (B)-(iv), (C)-(iii), (D)-(i)
(A)-(iv), (B)-(iii), (C)-(i), (D)-(ii)
(4)
Which one of the following statements is wrong? [2016]
Uracil is a pyrimidine.
Glycine is a sulphur-containing amino acid.
Sucrose is a disaccharide.
Cellulose is a polysaccharide.
(2)
Glycine is a neutral amino acid. Cysteine and methionine are sulphur containing amino acid.
The chitinous exoskeleton of arthropods is formed by the polymerisation of [2015]
N-acetyl glucosamine
lipoglycans
keratin sulphate and chondroitin sulphate
D - glucosamine.
(1)
Chitin is a structural polysaccharide that constitutes the exoskeleton of arthropods. It is a complex carbohydrate in which N-acetyl glucosamine monomers are joined together by (1, 4) -linkages. Chitinous exoskeleton provides strength and elasticity to arthropods.
Which one of the following is a non reducing carbohydrate? [2014]
Maltose
Sucrose
Lactose
Ribose 5-phosphate
(2)
In non-reducing sugars, a free aldehyde or ketonic group is absent. Sucrose is a non-reducing sugar formed by condensation of one molecule each of glucose and fructose with release of a water molecule. A glycosidic bond is established between carbon atom 1 of glucose and carbon atom 2 of fructose.
Inulin is a polymer of [2023]
fructose
galactose
amino acids
glucose
(1)
Inulin is a polymer of monosaccharide fructose.
Cellulose does not form blue colour with iodine because [2023]
It does not contain complex helices and hence cannot hold iodine molecules.
It breaks down when iodine reacts with it.
It is a disaccharide.
It is a helical molecule.
