Bchbasic
Muscle can release free glucose into the blood from glycogen because muscle contains glucose-6-phosphatase.
Answer
false
Explanation
### Why this is right
The statement is false because glucose-6-phosphatase is absent from muscle. Muscle converts glycogen-derived glucose-1-phosphate to glucose-6-phosphate and uses it locally in glycolysis.
### The concept
Liver and kidney glucose-6-phosphatase can remove phosphate from glucose-6-phosphate, allowing free glucose to enter the blood. Muscle lacks this final step and retains the carbon for its own energy needs.
### Terms
- **Glucose-6-phosphatase**: An enzyme that hydrolyzes glucose-6-phosphate to glucose and inorganic phosphate.
- **Glycogenolysis**: The breakdown of glycogen.
### Remember
Liver glycogen supports blood glucose; muscle glycogen fuels muscle.
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