Question

Breaking down of food without using oxygen is called

Answer 1

Answer:

Anaerobic Respiration:

When the breakdown of food occurs without the use of oxygen, respiration is called anaerobic respiration. During heavy exercise when the supply of oxygen to our muscle cells is insufficient, food breakdown is by anaerobic respiration.

Answer 2

Answer:

Anaerobic Respiration

Explanation:

and this done in yeast and sometimes also in human body while doing heavy excercises and produces lactic acid which causes the muscle cramp