Concept explainers
RECALL Which reaction or reactions that we have met in this chapter require ATP? Which reaction or reactions produce ATP? List the enzymes that catalyze the reactions that require and that produce ATP.
Interpretation:
The reactions that require and produce
Concept introduction:
Glycolysis is a metabolic pathway that converts one molecule of glucose into two molecules of pyruvate.
Glycolysis is an anaerobic process that occurs in the absence of oxygen.
Glycolysis is the fundamental system of sugar metabolism in the body that contributes to the production of energy in the form of
Answer to Problem 1RE
Solution: The first step of glycolysis, which is the phosphorylation of glucose to glucose-
The step involving the phosphorylation of
Explanation of Solution
The phosphorylation of glucose to glucose-
The step where
Glycolysis results in the production of two molecules of
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Chapter 17 Solutions
BIOCHEMISTRY (LL)
- RECALL Can the thermodynamic property G be used to predict the speed of a reaction in a living organism? Why or why not?arrow_forwardRECALL Define substrate-level phosphorylation and give an example from the reactions discussed in this chapter.arrow_forwardRECALL Which of the following are spontaneous processes? Explain your answer for each process. (a) The hydrolysis of ATP to ADP and Pi Pi (b) The oxidation of glucose to CO2 and H2O by an organism (c) The phosphorylation of ADP to ATP (d) The production of glucose and O2 from CO2 and H2O in photosynthesisarrow_forward
- RECALL Show graphically how the reaction velocity depends on the enzyme concentration. Can a reaction be saturated with enzyme?arrow_forwardRECALL Are all enzymes proteins?arrow_forwardRECALL If we made a Lineweaver-Burk plot of an irreversible inhibitor, which type of reversible inhibition would it be most likely to resemble?arrow_forward
- REFLECT AND APPLY A model is proposed to explain the reaction catalyzed by an enzyme. Experimentally obtained rate data fit the model to within experimental error. Do these findings prove the model?arrow_forwardRECALL Can enzyme inhibition be reversed in all cases?arrow_forwardREFLECT AND APPLY What do the following indicators tell you about whether a reaction can proceed as written? (a) The standard free-energy change is positive. (b) The free-energy change is positive. (c) The reaction is exergonic.arrow_forward
- RECALL Is the conversion of fumarate to malate a redox (electron transfer) reaction? Give the reason for your answer.arrow_forwardREFLECT AND APPLY Suggest a reason why heating a solution containing an enzyme markedly decreases its activity. Why is the decrease of activity frequently much less when the solution contains high concentrations of the substrate?arrow_forwardREFLECT AND APPLY Other things being equal, what is a potential disadvantage of an enzyme having a very high affinity for its substrate?arrow_forward
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning