Biomolecules
Q. What is the basic unit of proteins? (2023) 2023
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A.
Monosaccharide
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B.
Amino acid
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C.
Nucleotide
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D.
Fatty acid
Solution
Proteins are made up of amino acids, which are their basic building blocks.
Correct Answer: B — Amino acid
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Q. What is the main function of lipids in the body?
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A.
Energy storage
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B.
Genetic information
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C.
Structural support
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D.
Transport
Solution
Lipids serve as a major form of energy storage in the body.
Correct Answer: A — Energy storage
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Q. What is the primary component of the cell membrane?
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A.
Proteins
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B.
Carbohydrates
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C.
Phospholipids
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D.
Nucleic Acids
Solution
Phospholipids are the primary component of cell membranes, forming a bilayer.
Correct Answer: C — Phospholipids
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Q. What is the primary function of proteins in the body? (2023)
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A.
Energy storage
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B.
Catalyzing biochemical reactions
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C.
Genetic information storage
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D.
Cell membrane structure
Solution
Proteins act as enzymes that catalyze biochemical reactions.
Correct Answer: B — Catalyzing biochemical reactions
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Q. What is the primary function of proteins in the body? (2023) 2023
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A.
Energy storage
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B.
Catalyzing biochemical reactions
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C.
Genetic information storage
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D.
Cell membrane structure
Solution
Proteins primarily function as enzymes that catalyze biochemical reactions.
Correct Answer: B — Catalyzing biochemical reactions
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Q. What is the structure of a nucleotide?
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A.
Sugar, phosphate, and base
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B.
Amino group, carboxyl group, and side chain
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C.
Glycerol and fatty acids
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D.
Monosaccharides
Solution
A nucleotide consists of a sugar, a phosphate group, and a nitrogenous base.
Correct Answer: A — Sugar, phosphate, and base
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Q. What type of biomolecule is RNA? (2014)
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A.
Protein
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B.
Carbohydrate
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C.
Nucleic Acid
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D.
Lipid
Solution
RNA is classified as a nucleic acid, which plays a crucial role in protein synthesis.
Correct Answer: C — Nucleic Acid
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Q. What type of bond links amino acids together in a protein? (2023) 2023
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A.
Ionic bond
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B.
Covalent bond
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C.
Hydrogen bond
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D.
Peptide bond
Solution
A peptide bond is a specific type of covalent bond that links amino acids together in proteins.
Correct Answer: D — Peptide bond
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Q. What type of sugar is ribose?
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A.
Monosaccharide
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B.
Disaccharide
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C.
Polysaccharide
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D.
Oligosaccharide
Solution
Ribose is a monosaccharide, a simple sugar that is a component of RNA.
Correct Answer: A — Monosaccharide
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Q. Which biomolecule is known for its role in catalyzing biochemical reactions?
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A.
Nucleic Acids
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B.
Carbohydrates
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C.
Proteins
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D.
Lipids
Solution
Proteins, specifically enzymes, are known for their role in catalyzing biochemical reactions.
Correct Answer: C — Proteins
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Q. Which biomolecule is primarily involved in the structure of cell membranes?
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A.
Proteins
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B.
Carbohydrates
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C.
Nucleic Acids
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D.
Phospholipids
Solution
Phospholipids are the main components of cell membranes, forming a bilayer.
Correct Answer: D — Phospholipids
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Q. Which biomolecule is primarily responsible for genetic information? (2023)
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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
Nucleic acids, such as DNA and RNA, store and transmit genetic information.
Correct Answer: D — Nucleic acids
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Q. Which biomolecule is primarily responsible for storing genetic information? (2023) 2023
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A.
Proteins
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B.
Carbohydrates
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C.
Lipids
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D.
Nucleic acids
Solution
Nucleic acids, such as DNA and RNA, are responsible for storing and transmitting genetic information.
Correct Answer: D — Nucleic acids
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Q. Which biomolecule is primarily used for energy storage in animals?
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A.
Glycogen
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B.
Cellulose
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C.
Chitin
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D.
Starch
Solution
Glycogen is the primary energy storage molecule in animals.
Correct Answer: A — Glycogen
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Q. Which biomolecule is responsible for storing genetic information? (2023) 2023
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A.
Proteins
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B.
Lipids
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C.
Carbohydrates
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D.
Nucleic acids
Solution
Nucleic acids, such as DNA and RNA, are responsible for storing and transmitting genetic information.
Correct Answer: D — Nucleic acids
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Q. Which of the following is a carbohydrate? (2023) 2023
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A.
Glucose
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B.
Amino acid
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C.
Fatty acid
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D.
Nucleotide
Solution
Glucose is a simple sugar and a primary carbohydrate.
Correct Answer: A — Glucose
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Q. Which of the following is a lipid? (2023) 2023
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A.
Starch
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B.
Cholesterol
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C.
Cellulose
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D.
Glucose
Solution
Cholesterol is a type of lipid that is important for cell membrane structure.
Correct Answer: B — Cholesterol
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Q. Which of the following is a polymer of glucose? (2015)
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A.
Starch
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B.
Glycogen
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C.
Cellulose
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D.
All of the above
Solution
Starch, glycogen, and cellulose are all polymers made from glucose.
Correct Answer: D — All of the above
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Q. Which of the following is a saturated fatty acid?
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A.
Oleic acid
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B.
Stearic acid
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C.
Linoleic acid
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D.
Palmitoleic acid
Solution
Stearic acid is a saturated fatty acid, meaning it has no double bonds between carbon atoms.
Correct Answer: B — Stearic acid
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Q. Which type of biomolecule is glucose?
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A.
Protein
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B.
Lipid
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C.
Carbohydrate
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D.
Nucleic Acid
Solution
Glucose is a simple sugar and is classified as a carbohydrate.
Correct Answer: C — Carbohydrate
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