Question

In: Anatomy and Physiology

Why does ATP yield vary in cellular respiration (think about how NADH from glycolysis enters mitochondira)?

Why does ATP yield vary in cellular respiration (think about how NADH from glycolysis enters mitochondira)?

Solutions

Expert Solution

2 ATP molecules are produced from glycolysis, 2 ATP molecules are produced from Kreb's cycle and 34 ATP molecules are produced from oxidative phosphorylation (by electron transport system). Hence in total 38 (2+2+34= 38) ATP molecules are produced during cellular respiration. But this rarely happens because some ATPs are lost in moving pyruvate and ADP in matrix of mitochondria and some are lost due to leakage through membranes. Hence the actual yield of ATP in cellular respiration ranges around 30.

In Oxidative phosphorylation firstly oxidation of NADH and FADH2 happens and then secondly phosphorylation happens. NADH transfers its energy molecules to protein complex 1 and FADH2 transfers its energy molecules to protein complex 2 which leads to their oxidation. Process of NADH oxidation causes pumping of protons via protein complex 1 from the matrix to the intermembrane space which causes ADP to bind with inorganic phosphate (Pi) which produces ATP.


Related Solutions

Which of the following stages of cellular respiration makes the most ATP? glycolysis citric acid cycle...
Which of the following stages of cellular respiration makes the most ATP? glycolysis citric acid cycle oxidative phosphorylation
Which of the following pathways produce ATP during cellular respiration. Check All That Apply a) glycolysis...
Which of the following pathways produce ATP during cellular respiration. Check All That Apply a) glycolysis b) electron transport chains c)Calvin cycle d) Krebs cycle e) preparatory reaction
11. Discuss the three phases of cellular respiration, included any production of ATP, NADH, FADH2, CO2...
11. Discuss the three phases of cellular respiration, included any production of ATP, NADH, FADH2, CO2 produced, and trace the Carbon amounts from start to finish using Glucose (C6H12O6).
Compare the number ATP made from lactic acid fermentation to that of cellular respiration. Explain how...
Compare the number ATP made from lactic acid fermentation to that of cellular respiration. Explain how muscles cells recover from lactic acid. Explain the importance of β-oxidation and weight loss. Give the number of ATP made from the breakdown of a 12C fatty acid to that of one molecule of glucose. Please, i would appreciate an answer in a text form not handwritten. thank you
Glycolysis 1. How are reducing equivalents from NADH generated in glycolysis in the cytoplasm transported into...
Glycolysis 1. How are reducing equivalents from NADH generated in glycolysis in the cytoplasm transported into the mitochondrion resulting in the formation of NADH within the inner mitochondrial membrane? Thank you, I'm having trouble locating this answer in my notes/text book
Substrate-level phosphorylation to yield ATP occurs during which stage(s) of aerobic respiration? A. glycolysis B. pyruvate...
Substrate-level phosphorylation to yield ATP occurs during which stage(s) of aerobic respiration? A. glycolysis B. pyruvate conversion to acetyl-CoA C. tricarboxylic acid cycle (Krebs cycle) D. fermentation E. A and B only F. A and C only G. B and C only H. A, B, C, and D
What is the ATP yield from Glycolysis, Pyruvate processing, TCA cycle? Overall maximum theoretical yield from...
What is the ATP yield from Glycolysis, Pyruvate processing, TCA cycle? Overall maximum theoretical yield from complete oxidation of one molecule of Glucose?
In glycolysis, as in all the stages of cellular respiration, the transfer of electrons from electron donors to electron acceptors plays a critical role in the overall conversion of the energy in foods to energy in ATP.
Part A - Redox (oxidation-reduction) reactions in glycolysis In glycolysis, as in all the stages of cellular respiration, the transfer of electrons from electron donors to electron acceptors plays a critical role in the overall conversion of the energy in foods to energy in ATP. These reactions involving electron transfers are known as oxidation-reduction, or redox, reactions. Drag the words on the left to the appropriate blanks on the right to complete the sentences. 1. When a compound donates (loses)...
How does each nonspontaneous positive free energy step in glycolysis go to completion? Why does ATP...
How does each nonspontaneous positive free energy step in glycolysis go to completion? Why does ATP help make the step/reaction spontaneous? Why does ADP to ATP rxn in glycolysis also help make free energy change negative, wouldn’t it do the opposite of ATP?
Essay question: Explain how 38 ATP are formed in process of cellular respiration. EXPLAIN IN DETAILS.
Essay question: Explain how 38 ATP are formed in process of cellular respiration. EXPLAIN IN DETAILS.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT