Biochemistry (PACOP Blue) Questions
and Answers | Latest Version |
2025/2026 | Correct & Verified
Which biomolecule is the primary source of energy for the human body?
✔✔ a. Carbohydrates
b. Proteins
c. Lipids
d. Nucleic acids
Which monosaccharide is known as blood sugar?
a. Fructose
✔✔ b. Glucose
c. Galactose
d. Mannose
Which type of bond links amino acids in a protein?
a. Hydrogen bond
b. Ionic bond
1
,✔✔ c. Peptide bond
d. Glycosidic bond
Which vitamin is water-soluble?
a. Vitamin A
b. Vitamin D
✔✔ c. Vitamin C
d. Vitamin E
Which enzyme catalyzes the breakdown of starch into maltose?
a. Lipase
b. Protease
✔✔ c. Amylase
d. Lactase
Which lipid is the main component of cell membranes?
a. Triglycerides
b. Cholesterol esters
2
,✔✔ c. Phospholipids
d. Glycolipids
Which amino acid is essential in the human diet?
a. Glycine
b. Alanine
✔✔ c. Lysine
d. Glutamine
Which carbohydrate is a structural component of plant cell walls?
a. Starch
b. Glycogen
✔✔ c. Cellulose
d. Sucrose
Which coenzyme is derived from niacin?
a. FAD
✔✔ b. NAD
3
, c. CoA
d. Biotin
Which nucleic acid carries genetic information?
a. tRNA
b. rRNA
✔✔ c. DNA
d. miRNA
Which molecule is the end product of glycolysis under anaerobic conditions in humans?
a. Pyruvate
✔✔ b. Lactate
c. Acetyl-CoA
d. Oxaloacetate
Which amino acid contains sulfur in its structure?
✔✔ a. Cysteine
b. Leucine
4
and Answers | Latest Version |
2025/2026 | Correct & Verified
Which biomolecule is the primary source of energy for the human body?
✔✔ a. Carbohydrates
b. Proteins
c. Lipids
d. Nucleic acids
Which monosaccharide is known as blood sugar?
a. Fructose
✔✔ b. Glucose
c. Galactose
d. Mannose
Which type of bond links amino acids in a protein?
a. Hydrogen bond
b. Ionic bond
1
,✔✔ c. Peptide bond
d. Glycosidic bond
Which vitamin is water-soluble?
a. Vitamin A
b. Vitamin D
✔✔ c. Vitamin C
d. Vitamin E
Which enzyme catalyzes the breakdown of starch into maltose?
a. Lipase
b. Protease
✔✔ c. Amylase
d. Lactase
Which lipid is the main component of cell membranes?
a. Triglycerides
b. Cholesterol esters
2
,✔✔ c. Phospholipids
d. Glycolipids
Which amino acid is essential in the human diet?
a. Glycine
b. Alanine
✔✔ c. Lysine
d. Glutamine
Which carbohydrate is a structural component of plant cell walls?
a. Starch
b. Glycogen
✔✔ c. Cellulose
d. Sucrose
Which coenzyme is derived from niacin?
a. FAD
✔✔ b. NAD
3
, c. CoA
d. Biotin
Which nucleic acid carries genetic information?
a. tRNA
b. rRNA
✔✔ c. DNA
d. miRNA
Which molecule is the end product of glycolysis under anaerobic conditions in humans?
a. Pyruvate
✔✔ b. Lactate
c. Acetyl-CoA
d. Oxaloacetate
Which amino acid contains sulfur in its structure?
✔✔ a. Cysteine
b. Leucine
4
