Multiple choice When does the formation of fats begins in the body? Blood sugar level is constant. Glucose is converted into glycogen. Liver and muscles cannot store any more glycogen. Glucose combines with glycerol. Formation of fats occurs always in the body. Reveal answer Fill a bubble to check yourself C Correct answer Explanation This is the case when there is tremendous increase in the amount of blood sugar level. Here first glycogenesis begins and when the capacity of liver and muscles is full then the remaining extra glucose starts getting converted into fat.