Q. Which of the following is a characteristic of lipids?
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A.
Soluble in water
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B.
Insoluble in water
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C.
Made of amino acids
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D.
Formed by nucleotides
Solution
Lipids are characterized by their insolubility in water due to their hydrophobic nature.
Correct Answer: B — Insoluble in water
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Q. Which of the following is a characteristic of starch?
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A.
Soluble in water
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B.
Linear structure
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C.
Branched structure
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D.
Sweet taste
Solution
Starch has a branched structure, which allows it to store energy efficiently.
Correct Answer: C — Branched structure
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Q. Which of the following is a component of nucleotides?
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A.
Fatty acids
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B.
Amino acids
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C.
Nitrogenous bases
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D.
Monosaccharides
Solution
Nucleotides are made up of a nitrogenous base, a sugar, and a phosphate group.
Correct Answer: C — Nitrogenous bases
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Q. Which of the following is a disaccharide?
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A.
Fructose
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B.
Maltose
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C.
Glucose
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D.
Glycogen
Solution
Maltose is a disaccharide composed of two glucose units.
Correct Answer: B — Maltose
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Q. Which of the following is a function of carbohydrates?
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A.
Energy source
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B.
Hormone production
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C.
Genetic coding
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D.
Cell membrane structure
Solution
Carbohydrates primarily serve as an energy source for living organisms.
Correct Answer: A — Energy source
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Q. Which of the following is a function of lipids?
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A.
Energy storage
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B.
Catalysis
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C.
Genetic information
-
D.
Structural support
Solution
Lipids are primarily used for energy storage in organisms.
Correct Answer: A — Energy storage
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Q. Which of the following is a function of proteins in the body?
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A.
Energy storage
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B.
Hormonal regulation
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C.
Transport of molecules
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D.
All of the above
Solution
Proteins serve multiple functions in the body, including energy storage, hormonal regulation, and transport of molecules.
Correct Answer: D — All of the above
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Q. Which of the following is a function of proteins?
-
A.
Energy storage
-
B.
Hormonal regulation
-
C.
Genetic information
-
D.
Cell membrane structure
Solution
Proteins play a crucial role in hormonal regulation among other functions.
Correct Answer: B — Hormonal regulation
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Q. Which of the following is a lipid?
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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, while starch, cellulose, and glucose are carbohydrates.
Correct Answer: B — Cholesterol
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Q. Which of the following is a monosaccharide?
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A.
Sucrose
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B.
Lactose
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C.
Glucose
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D.
Starch
Solution
Glucose is a monosaccharide, while sucrose and lactose are disaccharides, and starch is a polysaccharide.
Correct Answer: C — Glucose
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Q. Which of the following is a polysaccharide?
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A.
Glucose
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B.
Fructose
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C.
Cellulose
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D.
Galactose
Solution
Cellulose is a polysaccharide made up of long chains of glucose units.
Correct Answer: C — Cellulose
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Q. Which of the following is a primary structure of proteins?
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A.
Sequence of amino acids
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B.
Alpha-helix structure
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C.
Beta-pleated sheet
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D.
Quaternary structure
Solution
The primary structure of proteins refers to the linear sequence of amino acids linked by peptide bonds.
Correct Answer: A — Sequence of amino acids
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Q. Which of the following is a reducing sugar?
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A.
Fructose
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B.
Sucrose
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C.
Starch
-
D.
Cellulose
Solution
Fructose is a reducing sugar, while sucrose, starch, and cellulose are not.
Correct Answer: A — Fructose
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Q. Which of the following is a storage form of glucose in animals?
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A.
Starch
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B.
Cellulose
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C.
Glycogen
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D.
Chitin
Solution
Glycogen is the storage form of glucose in animals, while starch serves this role in plants.
Correct Answer: C — Glycogen
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Q. Which of the following is a structural polysaccharide?
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A.
Starch
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B.
Glycogen
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C.
Cellulose
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D.
Maltose
Solution
Cellulose is a structural polysaccharide found in the cell walls of plants.
Correct Answer: C — Cellulose
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Q. Which of the following is NOT a function of carbohydrates?
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A.
Energy storage
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B.
Structural support
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C.
Hormone production
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D.
Cell recognition
Solution
Carbohydrates are primarily involved in energy storage, structural support, and cell recognition, but they do not produce hormones.
Correct Answer: C — Hormone production
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Q. Which of the following is NOT a function of lipids?
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A.
Energy storage
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B.
Insulation
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C.
Hormone production
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D.
Genetic information storage
Solution
Lipids do not store genetic information; that function is performed by nucleic acids.
Correct Answer: D — Genetic information storage
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Q. Which of the following is NOT a function of proteins?
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A.
Enzymatic activity
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B.
Energy storage
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C.
Transport of molecules
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D.
Cell signaling
Solution
While proteins can be involved in energy metabolism, they are not primarily used for energy storage; carbohydrates and fats serve that purpose.
Correct Answer: B — Energy storage
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Q. Which of the following techniques is commonly used to determine protein structure?
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A.
Mass spectrometry
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B.
Nuclear magnetic resonance (NMR)
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C.
X-ray crystallography
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D.
Both B and C
Solution
Both nuclear magnetic resonance (NMR) and X-ray crystallography are commonly used techniques to determine the three-dimensional structure of proteins.
Correct Answer: D — Both B and C
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Q. Which of the following techniques is commonly used to separate proteins based on their size?
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A.
Chromatography
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B.
Electrophoresis
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C.
Spectroscopy
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D.
Centrifugation
Solution
Gel electrophoresis is a technique used to separate proteins based on their size and charge.
Correct Answer: B — Electrophoresis
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Q. Which vitamin can be synthesized by the body when exposed to sunlight?
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A.
Vitamin A
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B.
Vitamin B12
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C.
Vitamin C
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D.
Vitamin D
Solution
Vitamin D can be synthesized by the body when the skin is exposed to sunlight.
Correct Answer: D — Vitamin D
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Q. Which vitamin deficiency can lead to night blindness?
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A.
Vitamin A
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B.
Vitamin B12
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C.
Vitamin C
-
D.
Vitamin D
Solution
A deficiency in Vitamin A can lead to night blindness, as it is crucial for maintaining healthy vision.
Correct Answer: A — Vitamin A
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Q. Which vitamin deficiency can lead to scurvy?
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A.
Vitamin A
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B.
Vitamin C
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C.
Vitamin K
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D.
Vitamin B1
Solution
A deficiency in Vitamin C can lead to scurvy, characterized by symptoms such as bleeding gums and fatigue.
Correct Answer: B — Vitamin C
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Q. Which vitamin is a powerful antioxidant?
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A.
Vitamin A
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B.
Vitamin C
-
C.
Vitamin E
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D.
Vitamin D
Solution
Vitamin E is known for its antioxidant properties, helping to protect cells from oxidative damage.
Correct Answer: C — Vitamin E
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Q. Which vitamin is also known as thiamine?
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A.
Vitamin B1
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B.
Vitamin B2
-
C.
Vitamin B3
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D.
Vitamin B6
Solution
Vitamin B1 is also known as thiamine and is important for carbohydrate metabolism and nerve function.
Correct Answer: A — Vitamin B1
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Q. Which vitamin is crucial for red blood cell formation?
-
A.
Vitamin B6
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B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin B12 is crucial for the formation of red blood cells and the maintenance of the nervous system.
Correct Answer: B — Vitamin B12
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Q. Which vitamin is essential for the synthesis of coenzyme A?
-
A.
Vitamin B1
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B.
Vitamin B2
-
C.
Vitamin B5
-
D.
Vitamin B12
Solution
Vitamin B5, also known as pantothenic acid, is essential for the synthesis of coenzyme A, which is important in fatty acid metabolism.
Correct Answer: C — Vitamin B5
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Q. Which vitamin is essential for the synthesis of collagen?
-
A.
Vitamin A
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B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin C is crucial for the synthesis of collagen, a key structural protein in the body.
Correct Answer: C — Vitamin C
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Q. Which vitamin is essential for the synthesis of retinal?
-
A.
Vitamin A
-
B.
Vitamin B2
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin A is essential for the synthesis of retinal, which is important for vision.
Correct Answer: A — Vitamin A
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Q. Which vitamin is important for blood clotting?
-
A.
Vitamin K
-
B.
Vitamin D
-
C.
Vitamin B6
-
D.
Vitamin C
Solution
Vitamin K is essential for the synthesis of proteins required for blood clotting.
Correct Answer: A — Vitamin K
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