- A) To generate ATP in the mitochondria
- B) To transport NADH from the cytoplasm to the mitochondria
- C) To transport FADH2 from the mitochondria to the cytoplasm
- D) To synthesize glucose in the liver
Biochemistry MCQ
Total MCQ: 92
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82 Which of the following is a heme-containing protein in the ETC?
- A) Cytochrome c (Cyt c)
- B) Coenzyme Q (CoQ)
- C) Flavin mononucleotide (FMN)
- D) NADH
83 Which enzyme is responsible for DNA replication?
- A) DNA polymerase
- B) RNA polymerase
- C) Ligase
- D) Helicase
84 What is the role of ribosomes in the cell?
- A) DNA replication
- B) Protein synthesis
- C) Lipid synthesis
- D) Carbohydrate breakdown
85 What is the primary function of enzymes in biochemical reactions?
- A) To act as a substrate
- B) To increase activation energy
- C) To speed up reactions
- D) To act as a product
86 What is the main function of carbohydrates in the body?
- A) Energy storage
- B) DNA synthesis
- C) Oxygen transport
- D) Hormone production
87 Which of the following is a coenzyme?
- A) Vitamin C
- B) Hemoglobin
- C) ATP
- D) DNA
88 What is the structure of a nucleotide?
- A) Sugar, phosphate, base
- B) Amino acid, peptide bond
- C) Sugar, fatty acid, base
- D) Sugar, base, peptide bond
89 What type of reaction is used to join amino acids together?
- A) Hydrolysis
- B) Condensation
- C) Oxidation
- D) Reduction
90 What is the basic unit of proteins?
- A) Nucleotide
- B) Amino acid
- C) Monosaccharide
- D) Fatty acid