- A) ADP
- B) Phosphate
- C) ATP
- D) Glucose
Biochemistry MCQ
Total MCQ: 92
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52 True or false? The potential energy in an ATP molecule is derived mainly from its three phosphate groups.
- A) TRUE
- B) FALSE
- C)
- D)
53 Which term describes the degree to which an element attracts electrons?
- A) Redation
- B) Electronegativity
- C) Polarity
- D) Oxidation.
54 Which process is not part of the cellular respiration pathway that produces large amounts of ATP in a cell?
- A) Electron transport chain
- B) Glycolysis
- C) Krebs cycle
- D) Fermentation
55 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
56 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
57 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
58 Into which molecule are all the carbon atoms in glucose ultimately incorporated during cellular respiration?
- A) Water
- B) ATP
- C) NADH
- D) Carbon dioxide
59 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
60 Which of the following statements about the electron transport chain is true?
- A) First step in cellular respiration
- B) Water is the last electron acceptor
- C) NADH and FADH₂ donate electrons
- D) Electrons gain energy as they move down the chain