How are calories stored as fat, and how is fat converted to calories?

I'm not asking what calories are and how one becomes fat; I already know they're energy and when you consume more than you burn, then your body converts it to fat, 3500 calories equal one pound, etc...





What I want to know is, how does it become anatomically and physiologically become fat? I learned in an Anatomy class that you cannot lose/destroy your fat cells (but you can gain more fat cells which is a serious condition) and that there is a "fat droplet" in each adipose (fat) cell that pushes the nucleus to the side of the cell. So do the calories (are they glucose or glycogen at this stage?) get stored in the fat droplet and increase the size of the fat droplet causing the cell to swell which makes one physically become bigger?





What I'm essentially trying to ask is: where and how do these extra calories get stored, why does their storage cause a physical increase in mass (why do we "look" fat instead of just having the fat stored in cells with no physical change), and how does the body convert it back to calories when it's needed?





Thanks ahead of time for anyone with a legitimate answer! :D


(i.e. not saying "that's a good question")|||If you eat more then you waste, then the carbohydrates combine with glucose since it doesn't go through glycolysis in cellular respiration.


;)


Best of Luck


Vote as Best|||udj