Krebs Cycle

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Krebs Cycle

Post by hannahzarzar » Sun Mar 13, 2011 1:00 am

What substrates are oxidized by the TCA cycle (Krebs cycle)?

I know it is cabon atoms and CO2, but I don't know specifically which carbon atoms.

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Post by JackBean » Fri Nov 04, 2011 2:33 pm

there is no carbon and definitely not CO2, acetyl-CoA enters the TCA cycle

Cis or trans? That's what matters.

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Re: Krebs Cycle

Post by chrisPbacon » Sat Nov 05, 2011 8:05 pm

JackBean wrote:there is no carbon and definitely not CO2, acetyl-CoA enters the TCA cycle

Definitely agree with Jack here! Carbon atoms and CO2 are the by-products of the redox reactions, and are not being oxidized or reduced. Look at the coenzymes involved during cellular respiration, which are being oxidized or reduced.

Hint: What gains electrons (reduction), and what loses electrons (oxidation). Also with each gain or loss of electrons remember an H+ ion is being gained or lost.
Chris Piaseczny

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