Mammals cannot use acetyl-CoA as a precursor of glucose, because the ________________________ is irreversible and cells have no other pathway to convert acetyl-CoA to pyruvate.
举一反三
- The conversion of pyruvate to Acetyl CoA is the rate limiting step acetyl CoA synthesis.（）
- The conversion of pyruvate to Acetyl CoA is the decarboxylation process.（）
- The first step of conversion of pyruvate into acetyl CoA is oxidation.（）
- Under normal conditions, the rates of glycolysis and of the citric acid cycle are integrated so that only as much glucose is metabolized to pyruvate as is needed to supply the citric acid cycle with its fuel, the acetyl groups of acetyl-CoA. Pyruvate, lactate, and acetyl-CoA are normally maintained at steady-state concentrations.
- Which of the following cannot be used as a material for<br/>gluconeogenesis() A: Acetyl CoA B: Pyruvate C: Glycerin D: All of the above E: None of the above