Remember that hexose kinase is an enzyme required for hexose metabolism, a process that takes a 6-carbon sugar and breaks it down into 2 pyruvate molecules. 5a. What specific metabolic process have we studied in which hexose metabolism occurs? 5b. How many steps does this pathway consist of? _steps 5c. Overall, this metabolic process (hexose → 2 pyruvate) is exergonic. However, if you look at the individual reactions that makeup this process, they are a mix of endergonic and exergonic reactions. Is the preceding statement true or false? If you selected true, describe the contribution of endergonic reactions to the overall exergonic process. If false, explain why.

Remember that hexose kinase is an enzyme required for hexose metabolism, a process that takes a 6-carbon sugar and breaks it down into 2 pyruvate molecules. 5a. What specific metabolic process have we studied in which hexose metabolism occurs? 5b. How many steps does this pathway consist of? _steps 5c. Overall, this metabolic process (hexose → 2 pyruvate) is exergonic. However, if you look at the individual reactions that makeup this process, they are a mix of endergonic and exergonic reactions. Is the preceding statement true or false? If you selected true, describe the contribution of endergonic reactions to the overall exergonic process. If false, explain why.

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter27: Metabolic Integration And Organ Specialization

Section: Chapter Questions

Problem 20P: Figure 27.3 illustrates the response of R (ATP-regenerating) and U (ATP-utilizing) enzymes to energy...

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In glycolysis, the conversion of phosphoenolpyruvate (PEP) to pyruvate is considered irreversible. Yet, in gluconeogenesis, this "irreverisble" reaction is bypassed and pyruvate is eventually converted to PEP. Explain how gluconeogenesis bypasses this irreverisble reaction. Include the enzymes required to convert pyruvate to PEP + the intermediate that is created. Imagine a scenario where the PDH complex has picked up an "activating" mutation causing it to convert pyruvate into acetyl CoA in an unregulated manner.There is way too much acetyl CoA than is actually necessary. Explain in a sentence or two how the body would compensate for this
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