In plants starch is food storage.

In herbivores starch is food.

In cooking starch is a thickener.

d. ribosomes

it stores food and keeps many important stuff in side in little parts.

The major storage form of energy in animals is glycogen ,it is stored in glycogen granule . Therefore glycogen granules in muscle cell act as stores of energy , since muscle cells requires alot of energy to perform their functions.

Just one salt granule can be irritating if you lie on it in bed.