Question

why do we get instant energy from Glucose???

Answer 1

Glucose can easily dissolved in blood along with Carbohydrates
so we get instant energy.
hope it helps

Answer 2

Glucose can easily dissolve in our blood and hence when glucose is taken it does not need to be digested and thus gets absorbed quickly. ... Carbohydrates, when consumed, have to be digested into glucose. As glucose can be easily absorbed in blood, it provides energy to the body.