Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 13.3, Problem 4TQ
Summary Introduction
To review:
The effect on the cell in case pyruvate kinase catalyzes PEP (phosphoenolpyruvate) conversion to pyruvate without coupling with ATP (adenosine triphosphate) production.
Introduction:
The reactions must be carried out very precisely and with coordination in all the living cells. The activation energy determines the
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In glycolysis, pyruvate kinase produces what high energy product and what low energy product?
What would be the effect on ATP and NADH production (how many ATP and NADH could be produced from one molecule of glucose) if pyruvate transport into the mitochondrion were inhibited?
During aerobic respiration how many ATP molecules are produced by theoxidation of a single molecule of pyruvate?
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Microbiology: An Evolving Science (Fourth Edition)
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- During oxidative phosphorylation: H+ are actively transported from __ to __? How does this process of active transport of H+ relate to how ATP is produced?arrow_forwardDo you mean that "reaction themodynamically favorable" is the same as irreversible? PFK-1 conversion of Pyruvate is ADP to ATP, how would you explain this?arrow_forwardHow many ATPs are synthesized for every cytoplasmic NADH reducing equivalent that is transferred into the matrix via the malate–aspartate shuttle?arrow_forward
- If actively respiring mitochondria are exposed to an inhibitor of ATPADP translocase, the electrontransport chain ceases to operate. Why?arrow_forwardWhen 12 molecules of glucose enter glycolytic pathway, how much NADH molecules are prdouced?arrow_forwardThis diagram shows pyruvate processing. A) Which moleculeis undergoing reduction? B) Which moleculeis undergoing oxidation?arrow_forward
- How would the ATP yield per glucose molecule be different if enzyme specificity forced FADH2 to be used in place of NADH throughout aerobic metabolism?arrow_forwardWhat are the products of glycolysis (from one glucose molecule)? What happens with NADH under aero (with oxygen) vs anaerobic (without oxygen)?arrow_forwardWhat is the term for the process whereby the synthesis of ATP is coupled to the conversion of NADH or FADH2 to NAD+ or FAD, respectively?arrow_forward
- What products of glucose oxidation are essential for oxidative phosphorylation? answer choices A.) NADPH and ATP B.) NADH and FADH2 C.) Pyruvate D.) Acetyl CoAarrow_forwardPhosphofructokinase is considered to be the enzyme responsible for controlling the rate-limiting step of the glycolytic pathway. Why would this step be considered rate-limiting step? Explain with reference to the feedback mechanisms that are occurring in cell respiration.arrow_forwardIf one molecule of fructose-1,6-bisphosphate is converted to pyruvate how many molecules of ATP, NADH, and FADH2 are formed?arrow_forward
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