1) PART A: Draw oxaloacetate with ONE 14 C-label (use a dot on the carbon to rep
ID: 63097 • Letter: 1
Question
1) PART A: Draw oxaloacetate with ONE 14C-label (use a dot on the carbon to represent the isotope) that would release 14CO2 in ONE cycle of the citric acid cycle. PART B: Show the steps (no mechanism) leading to the release of that one 14CO2. HINT: Don’t draw the entire CAC!
2) In class today we learned how much ATP could be made using the energy released by the reduction of O2 by NADH. Now do the same thing but showing how much ATP can made from the reduction of O2 by FADH2! HINT: use the redox table.
Explanation / Answer
2). 2 FADH2 enter into electron transport chain.........................
1 ATP production requires = 4 H+
Each FADH2 releases = 6H+
Total yield of ATP produced by a single FADH2= 6H+/1FADH2 x 1 ATP/4H+ = 1.5ATP
Total yield of ATP produced by 2 FADH2 produces = 2 x1.5 = 3 molecules of ATP
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