Question

Examples of calculation of the number of ATPs produced by respiratory chain ETC/ETS 1. NDH-1/cyt bo (the best) 2NADH+ 2H+2Q -> 2NAD' +2QH; NDH-1 runs twice (NDH-1 runs 2e-, cyt bo needs 4 e- per O:) 2QH2 + O2 -> 20+ 2H20 NDH-1 (4 H+ x 2) + cyt bo (8 H')= 16 H' pumped per 02 How many ATP? 16/3 = 5 2. Succinate DH/NAR Succinate +Q-> fumarate +QH Succinate DH runs ones (SDH runs 2 e., NAR need 2 e-por NO:) QH+NO; -> Q+NO2+ H20 Succinate DH (OH' x 1) + NAR (2H) = 2 H+ pumped per NO: How many ATP? 2/3=1 I. 14 pts. total (2 pts. each) What is the theoretical maximum yield of adenosine triphosphate (ATP) produced by ETC listed below? For full credit show your calculations. *Please consider biologically relevant reactions Refer to examples above for tips how to calculate ATP yield and present your calculations NDH-1/cyt bd NDH-1/Nitrate reductase NDH-2/cyt bo NDH-2/cyt hd NDH-2/Nitrate reductase Succinate dehydrogenase /cyt bo Succinate dehydrogenase /eyt hd

Answer 1

Electron transport chain :-

The theoretical marimun thcoret med yeel "cal marimum yield of by ETC is 38 € the Produ ATP poo oxeodation of etc is 38 C. Luring acrobia yolca 1. In substrate level e genera- - respiration) . In terms of terms of sub to Phosphorylation oxidative phosphorylation the component pathway involved every pair of electron transported to the of electron transport chain by a molecale a A NADH between 2 and 3 Alp dated for each pair of electron tranfferreal by FADH2 between 1 and 2 ATP are generated. An electrow transport chain is a series of complex es that transfer electrons from electrow donors to electrow acceptors via redox - reactions. Reactions Deslorategy 0 Nicofionamele nucleoteole I AH₂ + NADt & A + NADH THT © Flavoproteins. NABH + H+ + FAN NADT . su clonate + FAA nate & FAD NADT + FNINH2 Fumarate + FADH 2

2NADH = 5ATP

2NADH= 5ATP

6NADH= 15ATP

2 FADH2 = 3ATP

( 1 NADH = 2.5 ATPS OR 10H+ IONS AND 1FADH2= 1.5 ATP OR 6H+ IONS)

This stage produces most of the energy 34 atp molecules compared to only 2 Atp for glycolysis and 2 atp for krebs cycle and the electrom transport chain takes place in the mitochondria. The ETC pulls H+ ions through the chain from the electron transport chain the released hydrogen ions make ADP for an end result of 32 Atp.

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