Q. What is the basic structural unit of lipids? (2020)
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A.
Amino acids
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B.
Nucleotides
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C.
Fatty acids
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D.
Monosaccharides
Solution
Fatty acids are the basic structural units of lipids.
Correct Answer: C — Fatty acids
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Q. What type of biomolecule are enzymes? (2019)
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A.
Carbohydrates
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B.
Proteins
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C.
Lipids
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D.
Nucleic acids
Solution
Enzymes are primarily proteins that catalyze biochemical reactions.
Correct Answer: B — Proteins
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Q. What type of biomolecule is DNA? (2022)
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A.
Protein
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B.
Carbohydrate
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C.
Lipid
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D.
Nucleic acid
Solution
DNA is classified as a nucleic acid, which stores and transmits genetic information.
Correct Answer: D — Nucleic acid
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Q. What type of reaction forms a disaccharide from two monosaccharides? (2022)
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A.
Hydrolysis
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B.
Condensation
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C.
Oxidation
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D.
Reduction
Solution
A condensation reaction occurs when two monosaccharides combine to form a disaccharide, releasing water.
Correct Answer: B — Condensation
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Q. Which of the following amino acids is essential? (2023)
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A.
Glycine
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B.
Alanine
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C.
Leucine
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D.
Serine
Solution
Leucine is an essential amino acid that must be obtained through diet.
Correct Answer: C — Leucine
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Q. Which of the following biomolecules is primarily responsible for genetic information? (2021)
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A.
Proteins
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B.
Carbohydrates
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C.
Nucleic acids
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D.
Lipids
Solution
Nucleic acids, such as DNA and RNA, carry genetic information.
Correct Answer: C — Nucleic acids
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Q. Which vitamin is a coenzyme in the metabolism of carbohydrates? (2019)
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A.
Vitamin A
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B.
Vitamin B1
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C.
Vitamin C
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D.
Vitamin D
Solution
Vitamin B1 (thiamine) acts as a coenzyme in carbohydrate metabolism.
Correct Answer: B — Vitamin B1
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Q. Which vitamin is known to be a coenzyme in carbohydrate metabolism? (2019)
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A.
Vitamin A
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B.
Vitamin B1
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C.
Vitamin C
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D.
Vitamin D
Solution
Vitamin B1 (thiamine) acts as a coenzyme in the metabolism of carbohydrates.
Correct Answer: B — Vitamin B1
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Q. Which vitamin is primarily involved in vision? (2020)
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A.
Vitamin A
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B.
Vitamin C
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C.
Vitamin D
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D.
Vitamin E
Solution
Vitamin A is essential for the formation of rhodopsin, a pigment in the retina that is crucial for vision.
Correct Answer: A — Vitamin A
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