Question

Why is energy required by an organism even during sleep?

Answer 1

Energy is required during sleep also because some parts of our body even work while we sleep.

During the sleep, our body also carries metabolic activities which need energy.

In that time respiration digestion occurs when we are sleeping that need energy.

For example: Breathing, Respiration, Heart Beating and Etc.

Answer 2

.energy is required even during sleep because many metabolic activities like respiration , digestion , transportation , etc. Take place in our body during sleep also .