Organic molecules have four common characteristics. First, they are all carbon based, meaning they all
contain carbon. They are formed from just a few elements which join together to form small molecules which
join together, or bond, to form large molecules. The third characteristic of all organic molecules is that each is
kind of organic molecule is built from a single type of building block. For example, the building block of
carbohydrates is sugar, the building block of lipids is fatty acids, the building block of protein is amino acids
and the building block of nucleic acids is the nucleotide. When these building blocks are joined together, they
form a large molecule (polymer), just as bricks joined together form a wall. For example, sugars join together
form a carbohydrate.
Explanation
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