True or false? The eneamine form of hydroxyethl-TPP is the nucleophile that atta

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True or false? The eneamine form of hydroxyethl-TPP is the nucleophile that attacks lipoamide. When Ribose 5-phophate needs are greater than the need for NADPH, Glycolysis and the backwards route of the oxidative phase of PPP are used when NADPH is needed more than ribose 5-phosphate, gluconeogenesis and the oxidative phase of PPP are used. The Schiff base formed in the transaldolase reaction is a nucleophile. The PPP produces NADH during the oxidative phase of the pathway In the transketolase reaction, the Ylid form of TPP acts as a electrophile to attack a carbonyl '16-phosphogluconolactonase uses a histidine to deprotonate a water to generate a nucleophilic hydroxyl In the phosphopentose isomerase reaction Ribulose 5-phosphate is converted to Ribose 5-phosphate through an enediolate intermediate Lipoamide takes the acetyl group from TPP Submit Answer Answer Submitted: Your final submission will be graded after the due date. Tries 2/99 Previous Tries

Explanation / Answer

False

False. Non oxidative phase yields R5P from Ru5P

True

true

False. NADPH is produced

True. histidine donates a proton

True

True the acetyl group is transferred to the thioester linkage of lipoate inE2

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