throughout the whole process of cellular respiration. they mention electrons. but where do they come from? do they come from NAD+ reduction to NADH, FAD to FADH2?
- Just to make sure also.the H+ protons come from the oxidation of NADH to NAD+ and FADH2 to FAD. right?
2007-02-16 17:54:53 · 4 answers · asked by avalentin911 2 in Science & Mathematics ➔ Biology
Most of the energy made available by the oxidative steps of the citric acid cycle is transferred as energy-rich electrons to NAD+, forming NADH. For each acetyl group that enters the citric acid cycle, three molecules of NADH are produced.
Electrons are also transferred to the electron acceptor FAD, forming FADH2.
2007-02-16 18:42:17 · answer #1 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 0⤋
Remember that electrons are negative ( - ) and protons are positive ( + )...H+ is a hydrogen minus an electron.
My 1st year chem prof taught me this mnemonic for RedOx (reduction/oxidation)..."LEO says GER"...or Loss of an electron = oxidation and Gain of an electron = reduction. It's all about the electrons...the protons H+ are only acting as the transfer media for the electron transfer. Don't get caught up in what happens to the protons/H+...the important part is the electrons and the production of ATP through the redox reactions within the cycle.
2007-02-16 18:12:00 · answer #2 · answered by Perry L 5 · 1⤊ 0⤋
look up the Electron Transport System.
2007-02-16 18:25:22 · answer #3 · answered by molly hadley 2 · 0⤊ 0⤋
Hint. H+ is hydrogen stripped of it's electron.
2007-02-16 18:07:59 · answer #4 · answered by Anonymous · 0⤊ 0⤋