Which of the following statements about substrate-level phosphorylation is FALSE?Group of answer choicesThe oxidation of intermediate metabolic compounds releases energy that is used to generate ATP.It involves the direct transfer of a high-energy phosphate group from an intermediate metabolic compound to ADP.It occurs in the Krebs cycle.No final electron acceptor is required.It occurs in glycolysis.
Question
Which of the following statements about substrate-level phosphorylation is FALSE?Group of answer choicesThe oxidation of intermediate metabolic compounds releases energy that is used to generate ATP.It involves the direct transfer of a high-energy phosphate group from an intermediate metabolic compound to ADP.It occurs in the Krebs cycle.No final electron acceptor is required.It occurs in glycolysis.
Solution
The false statement about substrate-level phosphorylation is: "No final electron acceptor is required."
This is false because substrate-level phosphorylation does not involve an electron transport chain, so it does not require a final electron acceptor. Instead, it involves the direct transfer of a phosphate group from a substrate molecule to ADP, forming ATP. This process occurs in both glycolysis and the Krebs cycle. The energy for this process comes from the oxidation of intermediate metabolic compounds.
Similar Questions
Which of the following best describes substrate level phosphorylation?ANSWERIt is the same as oxidative phosphorylation.It occurs when an enzyme transfers a phosphoryl group from a donor substrate directly to ADP to make ATP.It occurs when light energy is used to activate electrons.It occurs during active electron transport.
Which statement about oxidative phosphorylation is NOT true?Group of answer choicesIt generates ATP using energy provided by the respiratory electron transfer chain.It requires aerobic conditions.It takes place in the cell's cytosol.It requires a proton motive force.It is powered by NADH and FADH2 produced by the tricarboxylic acid (TCA) cycle. PreviousNext
Which statement about the production of pyruvate in the final step of glycolysis is CORRECT? A. Pyruvate kinase transfers a phosphate group from ATP to PEP to generate pyruvate and ADP. B. The unfavourable conversion of PEP to pyruvate is driven largely by the highly favourable standard free energy change for the hydrolysis of ATP to ADP. C. The standard free energy change for the conversion of PEP to pyruvate is very highly favourable to counteract the unfavourable phosphorylation of ADP to ATP.
下列那一個反應不屬於substrate level phosphorylation？單選題(1 分) A.由phosphoglycerate kinase催化的反應所合成的ATP B.由succinyl-CoA synthetase催化的反應所合成的ATP C.由pyruvate kinase催化的反應所合成的ATP D.在electron transport system主導所合成的ATP
Which of the following statements regarding metabolism is FALSE?Group of answer choicesHeat may be released in both anabolic and catabolic reactions.Anabolic reactions are degradative.ADP is formed in anabolic reactions.ATP is formed in catabolic reactions.
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