Teresa M.

asked • 10/09/19

In three sentences, explain why the citric acid cycle stops when the electron transport chain is completely inhibited.

plz help like a lot becasue this is due tonight

1 Expert Answer

By:

Shayan P. answered • 10/10/19

Tutor
4.8 (29)

99 Percentile MCAT Tutor

See tutors like this
See tutors like this

In the citric acid cycle, three NADH and one FADH molecule are produced from NAD+ and FAD+. NADH and FADH are consumed by the electron transport chain when they donate their electron and turn into NAD+ and FAD+. Without the electron transport chain working, the NADH and FADH produced by the citric acid cycle build up and the delta g of the the citric acid cycle increases to the point that it stops.

Upvote • 1 Downvote
More
Report

Stan F.

tutor
Remember too, that these are oxidation-reduction reactions. In order for the cycle to continue, one product becomes oxidized (CO2) and one product becomes reduced (NADH and FADH2). In the electron transport chain, the electron gained is passed down the ETC to O2. NADH and FADH2 become oxidized to FAD+ and NAD+ and 02 becomes reduced to H20.
Report

10/14/19

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.