Biomolecules Chapter-Wise Test 13

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which type of bond is broken during the hydrolysis of sucrose?

Hydrolysis of sucrose breaks the glycosidic bond between glucose and fructose, yielding the two monosaccharides.

Glycosidic bond
Peptide bond
Disulfide bond
Hydrogen bond
1

What is the number of chiral carbons in the open chain form of fructose?

In its open chain form, fructose (a ketohexose) has three chiral carbons at C3, C4, and C5.

2
3
4
3
4

Which nucleic acid is single-stranded and involved in transcription?

Messenger RNA (mRNA) is single-stranded and synthesized during transcription from a DNA template.

DNA
tRNA
mRNA
rRNA
3

Which vitamin is required for the metabolism of amino acids?

Vitamin B₆ (Pyridoxine) is a coenzyme in amino acid metabolism, particularly in transamination reactions.

Vitamin B₁
Vitamin B₂
Vitamin B₆
Vitamin B₁₂
3

Which of the following is a ketohexose?

A ketohexose is a monosaccharide with six carbon atoms and a ketone group. Fructose has a ketone group at carbon 2 and six carbons, making it a ketohexose.

Fructose
Glucose
Ribose
Galactose
1

What is the product when glucose reacts with nitric acid?

Nitric acid, a strong oxidizing agent, oxidizes both the aldehyde and primary alcohol groups of glucose to carboxylic acids, forming saccharic acid.

Gluconic acid
Saccharic acid
Fructose
n-Hexane
2

Which vitamin is involved in blood clotting?

Vitamin K is essential for the synthesis of clotting factors, aiding in blood coagulation.

Vitamin A
Vitamin B₁
Vitamin C
Vitamin K
4

How many carbon atoms are present in an aldotetrose?

An aldotetrose is a monosaccharide with an aldehyde group and four carbon atoms.

3
4
5
6
2

Which vitamin deficiency causes poor blood clotting?

Vitamin K deficiency impairs the synthesis of clotting factors, leading to poor blood clotting.

Vitamin A
Vitamin C
Vitamin D
Vitamin K
4

Which enzyme catalyzes the hydrolysis of maltose into glucose?

Maltase is the enzyme specific to the hydrolysis of maltose into two glucose molecules.

Sucrase
Maltase
Lactase
Amylase
2

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