Biomolecules Chapter-Wise Test 1

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which monosaccharide is a component of sucrose?

Sucrose is a disaccharide made up of glucose and fructose, linked by an α-1,2-glycosidic bond.

Glucose
Galactose
Ribose
Deoxyribose
1

Which vitamin is essential for the formation of collagen?

Vitamin C (ascorbic acid) is required for the hydroxylation of proline and lysine in collagen synthesis.

Vitamin C
Vitamin A
Vitamin D
Vitamin E
1

Which nucleic acid is a major component of ribosomes?

Ribosomal RNA (rRNA) is a key structural and functional component of ribosomes, aiding protein synthesis.

mRNA
tRNA
DNA
rRNA
4

Which of the following is a fat-soluble vitamin?

Vitamin E is fat-soluble, stored in the body’s fatty tissues, unlike water-soluble vitamins like B and C.

Vitamin C
Vitamin E
Vitamin B₆
Vitamin B₁₂
2

Which monosaccharide has a ketone group?

Fructose is a ketose sugar with a ketone group at C2, unlike aldoses which have an aldehyde group.

Glucose
Galactose
Fructose
Ribose
3

Which monosaccharide is a component of both lactose and sucrose?

Glucose is a common monosaccharide in lactose (with galactose) and sucrose (with fructose).

Fructose
Galactose
Ribose
Glucose
4

What is the total number of carbon atoms in a maltose molecule?

Maltose, made of two glucose units (each with 6 carbons), has a total of 12 carbon atoms (\( \ce{C12H22O11} \)).

6
10
12
14
3

Which component of a nucleotide provides the backbone structure?

The sugar and phosphate groups form the backbone of nucleic acids via phosphodiester bonds.

Nitrogenous base
Amino acid
Sugar and phosphate
Fatty acid
3

Which vitamin deficiency causes bleeding gums?

Vitamin C deficiency leads to scurvy, characterized by bleeding gums due to impaired collagen synthesis.

Vitamin A
Vitamin D
Vitamin C
Vitamin K
3

Which amino acid contains two carboxyl groups in its structure?

Glutamic acid has two carboxyl groups: one in the main chain (-COOH) and one in the side chain (-CH₂-CH₂-COOH).

Lysine
Serine
Cysteine
Glutamic acid
4

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