Q:

What is the difference between starch and glycogen?

A:

Quick Answer

The key difference is that starch is converted by plants while glycogen is converted by animals. However, both starch and glycogen are polysaccharide polymers of alpha glucose.

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What is the difference between starch and glycogen?
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Full Answer

Starch can be in the form of amylose, with hundreds of glucose rings hooked together by a-1,4 linkages, or amylopectin, which might contain thousands of glucose rings hooked together with a combination of a-1,4 and a-1,6 linkages.

Glycogen is the means by which animals store glucose for later use. It has both a-1,4 and a-1,6 linkages, like amylopectin, allowing for many molecular branches and consequently a greater surface area for more rapid conversion by hydrolysis back to glucose.

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