Question

coal produces on burning ,but we cannot get energy by eating it while eating apple gives energy . explain why is it so.

Answer 1

INTRODUCTION:

Coal is a type of fossils fuel where as apple is a fruit.(plant product)

All human beings need food for survival especially it gives energy.We obtain energy from macro nutrients and micro nutrients.

Coal produces energy on burning which is not be utilized because it does not belongs to micro and macro nutrients.

Where as apple belongs to the micro nutrients category. From which we can extracts energy.

Answer 2

We cannot  get same energy by eating coal instead of apple because Coal burnt into CO2 & H2O whereas Apple convert into CO2 & few Lipid acids , further which this changed into  ATP & then into ADPs. They are release energy for our digestive system & helpful for our body to function.Also as we know that coal in not edible & also harmful for body in too much quantity.