Which type of molecule stores the main source of energy used by animals? a) lipids b) proteins c) glycogen d) starch

The correct answer is option C-glycogen

Glycogen is an immediate source of energy in animals. Glycogen is formed of small sub-units called glucose monomers. The process of formation of glycogen is called glycogenesis.  

Glycogen is animal equivalent to starch.  

When body need energy, the stored glycogen breaks down into small monomers called glucose and provide energy to the cell.  

The excessive amount of glycogen is stored in muscles and liver.

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