Biomolecules Chapter-Wise Test 14

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which protein is responsible for carrying oxygen in red blood cells?

Hemoglobin, a globular protein, binds oxygen in red blood cells for transport throughout the body.

Collagen
Myosin
Hemoglobin
Keratin
3

Which of the following is a ketose sugar?

A ketose sugar has a ketone group. Fructose is a ketohexose with a ketone group at C2.

Glucose
Galactose
Ribose
Fructose
4

Which bond is responsible for base pairing in DNA?

Hydrogen bonds hold complementary base pairs (A-T, G-C) together in the DNA double helix.

Peptide bond
Hydrogen bond
Phosphodiester bond
Disulfide bond
2

Which of the following is a purine base?

Purine bases in nucleic acids include adenine and guanine; guanine is present in both DNA and RNA.

Cytosine
Thymine
Uracil
Guanine
4

Which monosaccharide is present in maltose?

Maltose is a disaccharide composed of two glucose units linked by an α-1,4-glycosidic bond.

Glucose
Fructose
Galactose
Ribose
1

Which amino acid side chain contains a benzene ring?

Phenylalanine has a side chain with a benzene ring (-CH₂-C₆H₅), making it aromatic.

Serine
Methionine
Phenylalanine
Aspartic acid
3

Which disaccharide is a non-reducing sugar?

A non-reducing sugar has no free aldehyde or ketone group. Sucrose has its reducing groups involved in a glycosidic bond between glucose and fructose, making it non-reducing.

Sucrose
Maltose
Lactose
Ribose
1

Which type of sugar is fructose?

Fructose is a ketose sugar due to the presence of a ketone group at C2 in its open chain form.

Ketose
Aldose
Pentose
Disaccharide
1

Which sugar is present in DNA?

DNA contains deoxyribose, a pentose sugar lacking an -OH group at the 2’ position, distinguishing it from ribose in RNA.

Ribose
Deoxyribose
Glucose
Fructose
2

Which sugar is a component of DNA nucleotides?

Deoxyribose is the sugar in DNA nucleotides, differing from ribose by lacking an -OH group at C2.

Glucose
Ribose
Deoxyribose
Fructose
3

Performance Summary

Score:

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