Question

multiple choice question

which of the following compounds are superior electron donors in aerobic respiration because they are readily oxidized?

nucleic acids
sugars
amino acids

Explanation:

Identify the role of electron donors in respiration

In aerobic respiration, energy is harvested by transferring electrons from highly reduced organic compounds (electron donors) to an electron acceptor (oxygen).

Compare the options as primary energy sources

• Sugars (such as glucose) are highly reduced molecules rich in hydrogen atoms, making them excellent, readily oxidized electron donors that feed directly into glycolysis and the citric acid cycle.
• Amino acids and nucleic acids can be degraded for energy, but they are not the primary or most efficient/superior electron donors compared to carbohydrates (sugars).

Answer:

• Nucleic acids
• Sugars (Correct answer)
• Amino acids