Q.1: Which of the following monosaccharides is a component of RNA?
(a) Glucose
(b) Ribose
(c) Fructose
(d) Galactose
Q.2: Which of the following is a reducing sugar?
(a) Sucrose
(b) Glucose
(c) Starch
(d) Cellulose
Q.3: Which of the following is not a polysaccharide?
(a) Starch
(b) Glycogen
(c) Cellulose
(d) Maltose
Q.4: What is the main storage form of carbohydrates in animals?
(a) Starch
(b) Cellulose
(c) Glycogen
(d) Glucose
Q.5: Which of the following amino acids is not essential?
(a) Lysine
(b) Valine
(c) Glycine
(d) Methionine
Q.6: Which of the following vitamins is water-soluble?
(a) Vitamin A
(b) Vitamin D
(c) Vitamin E
(d) Vitamin C
Q.7: Which of the following is not a protein?
(a) Insulin
(b) Hemoglobin
(c) Cellulose
(d) Keratin
Q.8: Which of the following bases is found in RNA but not in DNA?
(a) Adenine
(b) Guanine
(c) Uracil
(d) Thymine
Q.9: Which of the following bonds connects amino acids in a protein?
(a) Glycosidic bond
(b) Peptide bond
(c) Phosphodiester bond
(d) Hydrogen bond
Q.10: Which of the following vitamins is involved in blood clotting?
(a) Vitamin A
(b) Vitamin B₁₂
(c) Vitamin K
(d) Vitamin D
Q.11: Which of the following is a disaccharide?
(a) Glucose
(b) Fructose
(c) Lactose
(d) Galactose
Q.12: Which of the following is a primary structure of a protein?
(a) Alpha-helix
(b) Beta-sheet
(c) Amino acid sequence
(d) Tertiary structure
Q.13: Which of the following is not a lipid?
(a) Cholesterol
(b) Triglyceride
(c) Phospholipid
(d) Cellulose
Q.14: Which of the following is the function of enzymes in biochemical reactions?
(a) Increase activation energy
(b) Decrease activation energy
(c) Provide energy
(d) None of the above
Q.15: Which of the following is an example of a globular protein?
(a) Collagen
(b) Keratin
(c) Hemoglobin
(d) Fibroin
Q.16: Which of the following is the storage form of carbohydrates in plants?
(a) Glycogen
(b) Cellulose
(c) Starch
(d) Glucose
Q.17: Which of the following is a fat-soluble vitamin?
(a) Vitamin C
(b) Vitamin B₁₂
(c) Vitamin A
(d) Vitamin B₆
Q.18: Which of the following enzymes is involved in the digestion of proteins?
(a) Amylase
(b) Lipase
(c) Pepsin
(d) Maltase
Q.19: Which of the following is the monomer unit of nucleic acids?
(a) Amino acids
(b) Nucleotides
(c) Monosaccharides
(d) Fatty acids
Q.20: Which of the following carbohydrates cannot be digested by humans?
(a) Starch
(b) Glycogen
(c) Cellulose
(d) Sucrose
Q.21: Which of the following amino acids contains sulfur?
(a) Valine
(b) Cysteine
(c) Leucine
(d) Phenylalanine
Q.22: Which of the following is a water-soluble vitamin?
(a) Vitamin D
(b) Vitamin K
(c) Vitamin C
(d) Vitamin E
Q.23: Which of the following is the main function of hemoglobin?
(a) Enzyme activity
(b) Oxygen transport
(c) Structural support
(d) Hormone regulation
Q.24: Which of the following carbohydrates is found in milk?
(a) Glucose
(b) Lactose
(c) Fructose
(d) Sucrose
Q.25: Which of the following is the major structural component of the cell wall in plants?
(a) Cellulose
(b) Starch
(c) Glycogen
(d) Chitin
Q.26: Which of the following is an essential fatty acid?
(a) Oleic acid
(b) Linoleic acid
(c) Palmitic acid
(d) Stearic acid
Q.27: Which of the following nucleotides is found in DNA but not in RNA?
(a) Adenine
(b) Cytosine
(c) Thymine
(d) Uracil
Q.28: Which of the following is the function of bile salts in digestion?
(a) Protein digestion
(b) Carbohydrate digestion
(c) Lipid emulsification
(d) Nucleic acid digestion
Q.29: Which of the following enzymes breaks down starch into maltose?
(a) Amylase
(b) Lipase
(c) Pepsin
(d) Trypsin
Q.30: Which of the following is the main storage form of lipids in the body?
(a) Phospholipids
(b) Steroids
(c) Triglycerides
(d) Waxes
Q.31: Which of the following amino acids is aromatic?
(a) Valine
(b) Alanine
(c) Tyrosine
(d) Glycine
Q.32: Which of the following is the monomer unit of cellulose?
(a) Fructose
(b) Glucose
(c) Galactose
(d) Ribose
Q.33: Which of the following is a ketose sugar?
(a) Glucose
(b) Fructose
(c) Galactose
(d) Ribose
Q.34: Which of the following is a storage form of glucose in animals?
(a) Starch
(b) Cellulose
(c) Glycogen
(d) Chitin
Q.35: Which of the following vitamins is required for the synthesis of collagen?
(a) Vitamin A
(b) Vitamin B₆
(c) Vitamin C
(d) Vitamin D
Q.36: Which of the following is a pentose sugar found in nucleotides?
(a) Glucose
(b) Fructose
(c) Ribose
(d) Galactose
Q.37: Which of the following lipids is a major component of cell membranes?
(a) Triglycerides
(b) Steroids
(c) Phospholipids
(d) Waxes
Q.38: Which of the following is a non-reducing sugar?
(a) Glucose
(b) Maltose
(c) Lactose
(d) Sucrose
Q.39: Which of the following is the major nitrogenous waste product in humans?
(a) Urea
(b) Ammonia
(c) Uric acid
(d) Creatinine
Q.40: Which of the following nucleotides pairs with adenine in DNA?
(a) Thymine
(b) Cytosine
(c) Guanine
(d) Uracil
Q.41: Which of the following is a coenzyme?
(a) NAD+
(b) ATP
(c) ADP
(d) FAD
Q.42: Which of the following vitamins is synthesized by the skin upon exposure to sunlight?
(a) Vitamin A
(b) Vitamin B₆
(c) Vitamin D
(d) Vitamin K
Q.43: Which of the following is a primary structure of protein?
(a) Alpha-helix
(b) Beta-sheet
(c) Amino acid sequence
(d) Quaternary structure
Q.44: Which of the following is an antioxidant vitamin?
(a) Vitamin A
(b) Vitamin C
(c) Vitamin D
(d) Vitamin K
Q.45: Which of the following is the storage form of glucose in plants?
(a) Glycogen
(b) Cellulose
(c) Starch
(d) Chitin
Q.46: Which of the following is a fat-soluble vitamin?
(a) Vitamin B₁
(b) Vitamin B₆
(c) Vitamin C
(d) Vitamin E
Q.47: Which of the following amino acids is essential?
(a) Glycine
(b) Valine
(c) Alanine
(d) Serine
Q.48: Which of the following is a structural polysaccharide in plants?
(a) Starch
(b) Glycogen
(c) Cellulose
(d) Chitin
Q.49: Which of the following is a function of RNA?
(a) Genetic information storage
(b) Protein synthesis
(c) Lipid synthesis
(d) Carbohydrate metabolism
Q.50: Which of the following is an example of a fibrous protein?
(a) Hemoglobin
(b) Myoglobin
(c) Collagen
(d) Insulin
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