What is the difference between external, internal, and cellular respiration?

Actually, external respiration is basically the transfer of gas between respiratory organs such as lungs and the outer environment. Internal respiration or tissue respiration/cellular respiration refers to a metabolic process in which oxygen is released to tissues or living cells and carbon dioxide is absorbed by the blood.

Explanation:

the answer is g1

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.