- A) Lactate
- B) Acetyl-CoA
- C) 2,3-Bisphosphoglycerate
- D) Fructose-2,6-bisphosphate
Biochemistry MCQ
Total MCQ: 92
32 What is produced from pyruvate under anaerobic conditions?
- A) Acetyl-CoA
- B) Lactate
- C) Ethanol
- D) NADH
33 How many molecules of NADH are produced per molecule of glucose during glycolysis?
- A) 0
- B) 1
- C) 2
- D) 4
34 Which of the following is an intermediate of glycolysis?
- A) Acetyl-CoA
- B) Fructose-1,6-bisphosphate
- C) Citrate
- D) Oxaloacetate
35 What does the term “ATP investment phase” refer to in glycolysis?
- A) The phase where no ATP is consumed.
- B) The phase where ATP is generated.
- C) The initial steps where ATP is consumed.
- D) The final steps where energy is released.
36 Which terms describe two atoms when they form a bond in which electrons are completely transferred?
- A) Proton and electron
- B) Ionic and covalent
- C) Polar and nonpolar
- D) Anion and cation
37 Which step of the cellular respiration pathway can take place in the absence of oxygen?
- A) Krebs cycle
- B) Fermentation
- C) Electron transport chain
- D) Glycolysis
38 Which of the following statements is true of the bonds in a water molecule?
- A) Oxygen acts as the electron acceptor and is oxidized.
- B) Oxygen holds electrons more tightly, net charge is zero
- C) Electron in each hydrogen transferred, net +1 charge
- D) Equal sharing of electrons, net charge zero
39 Into which molecule are all the carbon atoms in glucose ultimately incorporated during cellular respiration?
- A) Water
- B) ATP
- C) NADH
- D) Carbon dioxide
40 Which of the following statements is not true of most cellular redox reactions?
- A) Changes in potential energy can be released as heat.
- B) The reactant that is oxidized loses electrons.
- C) A hydrogen atom is transferred to the atom that loses an electron.
- D) The electron acceptor is reduced