Question

BIOCHEM:

Indicate how glycogen, starch, sucrose, and lactose can be metabolized to produce products that can be used in glycolysis!

Answer 1

Answer. Glycogen can be broken down to glucose 1 phosphate by enzyme glycogen phosphorylate. After mutase enzyme convert it to glucose 6 phosphate. Thus it can be used in glycolysis.

Starch :- it broken down into maltose by enzyme amylase then these maltose can be broken down into glucose. This glucose used in glycolysis.

Sucrose :- this is broken down into glucose and fructose so glucose can directly goes into glycolysis, while fructose is converted to fructose 1 phosphate by enzyme fructokinase that can directly used in glycolysis.

Lactose :- it is disaccharide of galactose and glucose. Glucose can directly into glycolysis while galactose is converted into glucose 1 phosphate by enzyme GALT (galactose-1-phosphate uridylyltransferase) and by using mutase enzyme it convert into glucose-6 phosphate