Wednesday, 7 December 2011

2.5 Elements in biological molecules

Recall the chemical elements present in carbohydrates, proteins and lipids (fats and oils).

Carbohydrate:
The elements present in a carbohydrate is Carbon, Hydrogen and Oxygen (CHO). The simple molecule in carbohydrates are sugars and the larger molecules are the polysaccharites e.g. starch.

Proteins:
The elements present in a protein is Carbon, Hydrogen, Oxygen and Nitrogen (CHON). The simple molecules of proteins are amino acids and the larger molecules are proteins itself.

Lipid:
The elements present in lipids are Carbon, Hydrogen, Oxygen (CHO). Lipids can be split into two categories - the fats and the oils.


Even though lipid and carbohydrates consists of the same elements, the structure is very different from one another. 

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