Question

Internal respiration may be defined as ______.

Options

• breathing in and releasing of oxygen in the tissue

• the oxidation of food substances to release energy

• the building up (synthesis) of complex substances

• getting rid of carbon dioxide that would accumulate in the tissues

Answer 1

Internal respiration may be defined as the oxidation of food substances to release energy.

Explanation:

Internal respiration refers to the cellular process in which food (such as glucose) is oxidised within cells to release energy. This energy is used for various life activities.