Question

We run, play, work, study. We need energy to do all of this. In fact, one characteristic of living things is that they need and use energy. Two processes are needed in us humans to break down food to release the energy that is stored in our food. They are ____________ and cellular respiration.

A:circulation

B: digestion

C excretion

D: photosynthesis

Answer 1

The correct answer is B

Step-by-step explanation

Digestion is the process whereby complex food substances taken into the body is broken down into simple, soluble and absorbable form so that the body can use.

As the digested food is absorbed into the blood stream, the cells break down this digested food with or without the use of oxygen to release energy. This process is termed as internal respiration.