Glycogen is a better short term storage molecule in animals than starch is in plants partly because glycogen
- A. contains no glycosidic bonds
- B. is soluble and diffuses freely out of the cell
- C. is built from beta glucose
- D. is far more branched, so many ends can be hydrolysed at once
Explanation
Extensive branching gives a large number of terminal glucose units, so enzymes can release glucose very rapidly when an active animal needs it. Being a large polymer it is also osmotically inactive and compact enough to store in liver and muscle. Starch is less branched and is adequate for a plant, which does not need sudden bursts of energy.
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