Answer :
DURING ANAEROBIC RESPIRATION DUE TO LOW AMOUNT OF OXYGEN THE PROCESS BREAKING DOWN OF GLUCOSE DO NOT TAKE PLACE WHOLLY AS COMPARE TO AEROBIC RESPIRATION IN ANAEROBIC RESPIRATION,GLUCOSE --------}2CARBON DI OXIDE +ETHANOL + ENERGY ABOUT 200KJ ONLY,IN ANAEROBIC RESPIRATION DUE TO THE ADDITION OF CARBON DI OXIDE WITH ETHANOL ENERGY IS RELEASED,IT IS JUST WHAT HAPPENS DURING FERMENTATION OF SUGAR HAPPENS.
In anaerobic respiration the respiration is carried out in the absence of oxygen. So the energy is released only in the form of ethyl alcohol. There is also incomplete or no breakdown of glucose. The energy content released is also very low as it releases only about 2 ATP(Adenosine Triphosphate). So very less organisms expect some bacteria and fungi respire anaerobically.