When one of the eight Krebs cycle intermediates is added to the respiration medium of living cells, like yeast, what happens to the rates of ATP and carbon dioxide production?
A) Rates of ATP and carbon dioxide production both decrease.
B) The rate of ATP production decreases, but the rate of carbon dioxide production increases.
C) The rates of ATP production and carbon dioxide production both increase.
D) There would be no change in ATP production but an increased rate of carbon dioxide production.

Question

Quizplus · Accepted Answer

Adding one of the Krebs cycle intermediates would increase the rate of the cycle, leading to an increased production of ATP via oxidative phosphorylation and an increased production of carbon dioxide as a byproduct of the cycle. Therefore, the rates of ATP and carbon dioxide production would both increase.

When One of the Eight Krebs Cycle Intermediates Is Added