- A) To generate oxygen
- B) To produce ATP
- C) To synthesize proteins
- D) To break down fatty acids
Biochemistry MCQ
Total MCQ: 92
22 What happens to glucose when it enters glycolysis?
- A) It remains unchanged.
- B) It gets phosphorylated.
- C) It gets oxidized directly.
- D) It forms fatty acids.
23 What type of reaction occurs during substrate-level phosphorylation in glycolysis?
- A) Oxidation-reduction reaction
- B) Hydrolysis reaction
- C) Phosphorylation reaction
- D) Condensation reaction
24 Where does glycolysis occur in the cell?
- A) Mitochondria
- B) Cytoplasm
- C) Nucleus
- D) Endoplasmic reticulum
25 Which metabolic pathway does pyruvate enter when oxygen is present?
- A) Glycolysis
- B) Fermentation
- C) TCA cycle
- D) Lipid synthesis
26 Which compound serves as an allosteric regulator derived from glycolytic intermediates?
- A) Lactate
- B) Acetyl-CoA
- C) 2,3-Bisphosphoglycerate
- D) Fructose-1,6-bisphosphate
27 What is the net gain of ATP molecules from one molecule of glucose during glycolysis?
- A) 1 ATP
- B) 2 ATP
- C) 4 ATP
- D) 6 ATP
28 Which enzyme regulates one of the key irreversible steps in glycolysis by converting fructose-6-phosphate into fructose-1,6-bisphosphate?
- A) Hexokinase
- B) Phosphofructokinase-1
- C) Pyruvate kinase
- D) Aldolase
29 What drives the directionality of reactions in glycolysis?
- A) Temperature and pressure
- B) Concentration of reactants and products
- C) Enzyme concentration
- D) All of these factors
30 Which enzyme catalyzes the first step of glycolysis?
- A) Phosphofructokinase
- B) Pyruvate kinase
- C) Hexokinase
- D) Aldolase