Which of the following is incorrect about the fifth step (conversion of succinyl-CoA, GDP, and Pi to succinate and GTP) of the citric acid cycle? a. GTP is made because succinyl-CoA is a thioester b. It is not regulated c. It involves a "substrate level" phosphorylation of GDP d. It is irreversible

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Q: COO I CH₂ HC-COO HO-CH COO COO™ 1 CH₂ CH₂ COO 11 C-H COO

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Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.