how is the absorption of fat different from that of sugar or amino acids?

Answer 1

Short answer: fats pass through the cell membrane b/c they are lipids. Sugars and AAs are not, so they enter the cell through endocytosis. This in the brush border endothelial cells of the gut.

Answer 2

yeah what he said.....sugar is stored(after absorbed) as glycogen or it's excess as fat pretty much sames goes for protein.