

Glycolysis - Medical Science
Q1: Glucose from the breakdown of glycogen is obtained inA the liver by phosphorolysis
B the muscles by phosphorolysis
C the muscles by hydrolysis
D both (a) and (b)
ANS:D - both (a) and (b) Muscle which contains only hexokinase can use this enzyme to phosphorylate fructose producing F6P which is a direct glycolytic intermediate. In liver the glucokinase, is specific for glucose as a substrate, therefore it requires an alternative enzyme to phosphorylate fructose. Hepatic fructokinase can phosphorylate fructose on C-1 to produce fructose-1-phosphate (F1P). |


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