In the absence of oxygen, yeast cells can obtain energy by fermentation, resulti

Question

In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the production of A) ATP, CO_2, and ethanol (ethyl alcohol) B) ATP, pyruvate, and acetyl CoA. C) ATP, CO_2, and lactate. D) ATP, pyruvate, and oxygen. E) ATP, NADII, and pyruvate. Whenever energy is transformed, there is always an increase in the A) free energy of the universe. B) free energy of the system. C) entropy of the universe. D) entropy of the system. E) enthalpy of the universe. Reduction of oxygen to form water occurs during A) both photosynthesis and respiration. B) neither photosynthesis nor respiration. C) photosynthesis only. D) respiration only. E) photorespiration only. Which of the following is most similar in structure to ATP? A) a phospholipid B) a pentose sugar C) an RNA nucleotide D) a DNA nucleotide E) an amino acid with three phosphate groups attached

Explanation / Answer

1. A. ATP, CO2 and ethanol.

In yeast, glucose is anaerobically converted into ethanol by the process of alcholic fermentation with the release of ATP and C02.

2. V. Entropy of the universe.

3. Respiration only.

4. C. RNA nucleotide.

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