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How many of each of the following molecules are produced in each step of cellular...

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fljlsdf | Student, College Freshman

Posted October 30, 2008 at 10:16 AM via web

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How many of each of the following molecules are produced in each step of cellular respiration: ATP, NADH, FADH, and CO2?  Please include glycolysis, transition reaction, Krebs cycle, and oxidative phosphorylation.

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melony82 | High School Teacher | (Level 1) Associate Educator

Posted October 31, 2008 at 5:20 AM (Answer #1)

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Glycolysis yields a total of 4 ATP, 2 pyruvates, and 2 NADH molecules.  However, since the cell needs to make an initial investment of 2 ATP, it is generally considered that glycolysis only yields 2 ATP, 2 pyruvates, and 2 NADH.

The transition reaction yields 2 molecules of carbon dioxide, 2 NADH, and 2 acetyl Co-A molecules.

Krebs cycle contributes 4 more carbon dioxide molecules, 6NADH, 2 FADH2 and 2 ATP.

Oxidative phosphorylation produces 34 more ATP.

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