Biomolecules Chapter-Wise Test 16

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which disaccharide is formed by the linkage of two glucose units?

Maltose is a disaccharide formed by an α-1,4-glycosidic linkage between two glucose units.

Sucrose
Lactose
Fructose
Maltose
4

Which of the following is an essential amino acid?

Essential amino acids cannot be synthesized by the body and must be obtained from the diet. Valine is one such amino acid.

Glycine
Alanine
Valine
Glutamic acid
3

Which amino acid side chain contains a sulfur atom but does not form disulfide bonds?

Methionine has a sulfur atom in its side chain (-CH₂-CH₂-S-CH₃), but it does not form disulfide bonds like cysteine.

Cysteine
Methionine
Serine
Tyrosine
2

Which vitamin deficiency results in soft bones in children?

Vitamin D deficiency causes rickets in children, leading to soft and deformed bones due to poor mineralization.

Vitamin C
Vitamin D
Vitamin B₁
Vitamin E
2

Which disaccharide is hydrolyzed by maltase?

Maltase hydrolyzes maltose into two glucose units, breaking the α-1,4-glycosidic bond.

Sucrose
Maltose
Lactose
Fructose
2

Which component of a nucleotide carries genetic information?

The nitrogenous base (e.g., adenine, thymine) in a nucleotide determines the genetic code.

Sugar
Phosphate
Nitrogenous base
Amino acid
3

Which of the following is a structural unit of proteins?

Amino acids are the building blocks of proteins, linked together by peptide bonds.

Amino acid
Fatty acid
Nucleotide
Monosaccharide
1

Which vitamin prevents night blindness?

Vitamin A (retinol) is essential for rhodopsin synthesis, preventing night blindness.

Vitamin A
Vitamin B₂
Vitamin C
Vitamin D
1

Which vitamin deficiency leads to neurological disorders like Wernicke’s encephalopathy?

Vitamin B₁ (Thiamine) deficiency causes Wernicke’s encephalopathy, a neurological condition linked to beriberi.

Vitamin B₂
Vitamin B₁
Vitamin B₃
Vitamin B₁₂
3

Which nucleic acid component is absent in RNA?

Thymine is a base found in DNA but replaced by uracil in RNA.

Thymine
Uracil
Guanine
Cytosine
1

Performance Summary

Score:

Category Details
Total Attempts:
Total Skipped:
Total Wrong Answers:
Total Correct Answers:
Time Taken:
Average Time Taken per Question:
Accuracy:
0