What calories physically are, and how things like water and celery have none whatsoever?

Question

What calories physically are, and how things like water and celery have none whatsoever?

In: Biology

Answer 1

Calories are what components of the food have hat can be processed to get energy (ATP) water isnt a molecule that can be turned to ATP but lipids carbonhydrades and aminoacids can be turned to it. And celery has carbonhydrades so it has calories but not so much as foods with lipids(fats) inside