
Concept explainers
(a)
Interpretation:
The reason corresponding to the decrease in the amount of active enzyme with time of incubation is to be stated.
Concept introduction:
Enzymes being the catalysts increase the
(b)
Interpretation:
The reason corresponding to the declination in the amount of enzyme from the PLP-deficient cells more rapidly needs to be explained.
Concept introduction:
Enzymes being the catalysts increase the rate of reaction. In an enzyme-catalyzed reaction, the rate of reaction for the product formation depends on the concentration of enzyme as well as the substrate involved in the reaction via formation of an enzyme substrate complex.

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Chapter 8 Solutions
Biochemistry (Looseleaf)
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- TPP is also utilized in transketolase reactions in the PPP. Give a mechanism for theTPP-dependent reaction between Xylulose-5-phosphate and Ribose-5-Phosphate toyield Glyceraldehyde-3-phosphate and Sedoheptulose-7-Phosphate.arrow_forwardWhat is the difference between a ‘synthetase’ and a ‘synthase’?arrow_forwardIn three separate experiments, pyruvate labeled with 13C at C-1, C-2, or C-3 is introduced to cells undergoing active metabolism. Trace the fate of each carbon through the TCA cycle and show when each of these carbons produces 13CO2.a. Glucose is similarly labeled at C-2 with 13C. During which reaction will this labeled carbon be released as 13CO2?arrow_forward
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