Question

why do we get instant energy from glucose

Answer 1

Answer: Glucose is a simple sugar. Carbohydrates, when consumed, have to be digested into glucose. As glucose can be easily absorbed in blood, it provides energy to the body. Hence, when glucose is directly taken, it does not have to be digested and thus acts as an instant source of energy.

Answer 2

Because glucose is the simplest food so it don't need to be digested and directly respiration occurs and we get energy