Biomolecules Chapter-Wise Test 6

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which protein regulates blood sugar levels?

Insulin, a protein hormone, lowers blood glucose by promoting its uptake into cells.

Insulin
Hemoglobin
Collagen
Myosin
1

Which vitamin is essential for calcium absorption?

Vitamin D enhances calcium absorption in the intestines, aiding bone health.

Vitamin D
Vitamin A
Vitamin C
Vitamin K
1

The cyclic structure of fructose is analogous to which compound?

Fructose forms a five-membered ring in its cyclic form, similar to furan, hence called fructofuranose.

Pyran
Furan
Benzene
Cyclohexane
2

Which vitamin is a component of TPP (thiamine pyrophosphate)?

Vitamin B₁ (Thiamine) is a precursor to TPP, a coenzyme in decarboxylation reactions.

Vitamin B₂
Vitamin B₁
Vitamin B₆
Vitamin B₁₂
2

Which protein structure involves interactions between multiple polypeptide chains?

The quaternary structure involves interactions (e.g., hydrogen bonds, disulfide bonds) between multiple polypeptide chains in a protein.

Primary
Secondary
Tertiary
Quaternary
4

Which vitamin deficiency causes cracks at the corners of the mouth?

Vitamin B₂ (Riboflavin) deficiency leads to cheilosis, characterized by cracks at the mouth corners.

Vitamin B₁
Vitamin B₂
Vitamin B₆
Vitamin C
2

Which amino acid is the simplest in structure?

Glycine has the simplest structure with a hydrogen atom as its side chain (-H).

Alanine
Valine
Leucine
Glycine
4

Which base is a pyrimidine found in both DNA and RNA?

Cytosine is a pyrimidine base present in both DNA and RNA, pairing with guanine.

Thymine
Cytosine
Uracil
Adenine
2

Which monosaccharide is produced alongside galactose during lactose hydrolysis?

Lactose hydrolysis yields glucose and galactose, catalyzed by lactase.

Fructose
Ribose
Glucose
Mannose
3

What is the product when fructose is reduced with hydrogen?

Reduction of fructose (a ketohexose) with hydrogen converts the ketone group to an alcohol, forming mannitol, a sugar alcohol.

Glucose
Mannitol
Galactose
Sorbitol
2

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