Biomolecules Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which nucleic acid is involved in protein synthesis?

RNA (ribonucleic acid) plays a key role in protein synthesis, including mRNA, tRNA, and rRNA.

RNA
DNA
Protein
Carbohydrate
1

Which amino acid has a basic side chain?

Lysine has a basic side chain (-CH₂-CH₂-CH₂-CH₂-NH₂), which can accept protons.

Glycine
Lysine
Serine
Phenylalanine
2

Which enzyme deficiency causes lactose intolerance?

Lactase deficiency prevents the hydrolysis of lactose into glucose and galactose, leading to lactose intolerance.

Sucrase
Maltase
Lactase
Invertase
3

Which vitamin acts as a coenzyme in redox reactions?

Vitamin B₂ (Riboflavin) is a precursor to FAD and FMN, coenzymes involved in redox reactions.

Vitamin B₁
Vitamin B₂
Vitamin B₆
Vitamin C
2

Which monosaccharide produces an optically inactive product upon reduction?

Fructose, a ketohexose, reduces to form mannitol and glucitol, but its symmetry in some contexts yields optically inactive products; it’s a reducing sugar with unique properties.

Fructose
Glucose
Galactose
Ribose
1

Which disaccharide is found in sugarcane?

Sucrose, composed of glucose and fructose, is the primary sugar in sugarcane.

Maltose
Sucrose
Lactose
Galactose
2

Which of the following is a disaccharide?

Lactose is a disaccharide composed of glucose and galactose, linked by a glycosidic bond.

Lactose
Glucose
Fructose
Ribose
1

Which of the following is an example of a globular protein?

Hemoglobin is a globular protein, spherical in shape and soluble in water, involved in oxygen transport.

Hemoglobin
Collagen
Keratin
Myosin
1

Which monosaccharide forms a five-membered ring in its cyclic structure?

Fructose forms a five-membered furanose ring in its cyclic form, analogous to furan.

Glucose
Galactose
Mannose
Fructose
4

Which monosaccharide forms a six-membered ring in its cyclic structure?

Glucose forms a six-membered pyranose ring in its cyclic form, analogous to pyran, due to the reaction between C1 and C5.

Fructose
Glucose
Ribose
Galactose-1-phosphate
2

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