Question

Anaerobic respiration occurs when ____.

water levels are low
light intensity is low
pH is unbalanced
oxygen is not present

Answer 1

D. It occurs when oxygen isn't present.

Answer 2

oxygen is not present is correct option.

Step-by-step explanation:

• Anaerobic respiration occurs in the absence of Oxygen, it uses organic or inorganic molecules as electron acceptors.

• In anaerobic respiration, there is a breakdown glucose molecule in the absence of oxygen. In this process, lactic acid is produced

• During the intense exercise supply of oxygen is less when oxygen is less, in that case, muscle cell performs anaerobic respiration and then pyruvate is converted into lactic acid.