Life 120 Exam 2

A research applies a chemical inhibitor to a plant cell that completely blocks NADP+ from accepting electrons during the light reactions. What is the immediate consequence for the Calvin-Benson cycle?

The cycle will stall to a lack of NADPH

A yeast cell is capable of both aerobic respiration and anaerobic respiration via alcohol fermentation. Which process occurs during anaerobic respiration but NOT during aerobic respiration?

NADH is oxidized as pyruvate is converted into ethanol

Which of the following statements is true regarding ATP production via substrate-level phosphorylation in yeast?

It occurs during both aerobic and anaerobic respiration

Which of the following structures utilizes the proton-motive force to generate potential energy that cells can use?

ATP synthase

During the light reactions of photosynthesis, at what point are electrons at their lowest energy level?

When they are within a water molecule

Which molecule acts as the final electron acceptor during lactic acid fermentation?

Pyruvate

What is the initial source of potential energy for both aerobic and anaerobic respiration?

Glucose

During the Calvin-Benson cycle, which carbon-containing molecule is reduced to eventually form sugar?

Carbon dioxide

This molecule is reduced to form an electron carrier during pyruvate oxidation?

NAD+