The pentose phosphate pathway is regulated by __________*1 pointNone of these optionsAcetyl CoAAll optionsNADP+ATPNADPH
Question
The pentose phosphate pathway is regulated by __________
1 point
- None of these options
- Acetyl CoA
- All options
- NADP+
- ATP
- NADPH
Solution
The pentose phosphate pathway is regulated by the levels of NADP+ and NADPH in the cell.
Here are the steps:
-
The pentose phosphate pathway is a metabolic pathway parallel to glycolysis and it generates NADPH and pentoses.
-
The first enzyme of the pathway, glucose-6-phosphate dehydrogenase, is regulated by the levels of NADP+ and NADPH.
-
When the cell has a high NADP+/NADPH ratio, indicating a need for reducing power, the pathway is stimulated.
-
Conversely, when the NADP+/NADPH ratio is low, indicating a sufficient supply of reducing power, the pathway is inhibited.
So, the pentose phosphate pathway is regulated by NADP+ and NADPH.
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