1) There are 20 amino acids. The best sources of essential amino acids are animal proteins like meat, eggs and poultry.
2) Unsaturated fat is generally healthier for you. Unsaturated fats help lower a person's levels of LDL cholesterol, reduce inflammation, and build stronger cell membranes in the body.
3) Elements found in proteins are carbon, hydrogen, oxygen, nitrogen and sulfur.
4) Elements found in lipids are hydrogen, sulfur, carbon, nitrogen, oxygen and phosphorus
