2.5 Elements in biological molecules

1. Carbohydrates-Carbon, hydrogen, and oxygen
2. Proteins-Carbon, hydrogen, oxygen, and nitrogen
3. Lipids-carbon, hydrogen, oxygen
4. Although the elements present in lipids and carbohydrates are the same, the structure and formula is very different.
5. Carbohydrate include sugars molecules and the larger molecules such as polysaccherides and starch. 
6.  In protein, the simple molecules are amino acids and the larger molecules are proteins.
7. In the work amino acids and proetins the 'n' comes from the element nitrogen.
8. Lipids are divided into two groups: Fats, associated with animals, and oils, associated with plants.