NEET Biomolecules — Set 19

Question 1

Which vitamin acts as an antioxidant?

Accepted Answer

Vitamin E (tocopherol) acts as an antioxidant, protecting cell membranes from oxidative damage.

Question 2

Which monosaccharide is a component of DNA?

Accepted Answer

Deoxyribose is the five-carbon sugar in DNA nucleotides, lacking an -OH group at C2.

Question 3

How many -OH groups are present in the open chain structure of glucose?

Accepted Answer

The open chain structure of glucose has five -OH groups attached to different carbon atoms, confirmed by its reaction with acetic anhydride to form a pentaacetate.

NEET Chemistry: Biomolecules — Practice Set 19

Q1. Which vitamin acts as an antioxidant?

Q2. Which monosaccharide is a component of DNA?

Q3. How many -OH groups are present in the open chain structure of glucose?

Q4. Which disaccharide is fermented by yeast to produce alcohol?

Q5. Which vitamin deficiency causes macrocytic anemia?

Q6. Which vitamin deficiency disrupts carboxylation reactions?

Q7. Which monosaccharide is an epimer of glucose?

Q8. Which biomolecule is denatured by heavy metal ions like Hg²⁺?

Q9. Which of the following is an aldohexose?

Q10. Which vitamin is essential for preventing scurvy?