What are 4 types of organic compounds used by cells during metabolism?

Question

Only four. And if you have the answer I would like a website to see it.

Answer 1

monosaccharides

fatty acids

amino acids

glycerol

Proteins are digested to amino acids. Polysaccharides like starch and disaccharides like sucrose and lactose are digested to monosaccharides. Fats and oils are digested to fatty acids and glycerol. The rest is metabolism. That which is not digested remains in the gut to cause osmotic and fermentative problems.