If a molecule is reduced it gains:
Correct answer: D. All of the above
- A. Energy
- B. Electrons
- C. Hydrogen protons
- D. All of the above
Explanation
Reduction is a chemical reaction in which a molecule gains electrons. This gain of electrons can be accompanied by the gain of hydrogen protons due to the nature of biological redox reactions. The energy increase is a result of the electron transfer process. Hence, the correct answer is option D: 'All of the above.' Although options A, B, and C each describe an aspect of reduction, only option D encompasses all the elements typically associated with reduction reactions.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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