A small amount of fat is an essential part of a healthy, balanced diet. Fat is a source of essential fatty acids, which the body can't make itself. Fat helps the body absorb vitamins A, D and E. These vitamins are fat-soluble, meaning they can only be absorbed with the help of fats.
-Jen
Sugars are molecules that have a 1:2:1 c:h:o and are called carbohydrates.
I think it is a plant cell model