Details of the Macromolecules

Starch, glycogen and cellulose are also examples of polysaccharides.  Excess glucose is stored in plants as starch, and in animal tissue as glycogen.  The cell wall of plants called cellulose are made of glucose.

Proteins are made of the monomers amino acids.  Proteins account for more than 50 % of the dry weight of most cells and are instrumental in almost everything.  All proteins are made of 20 kinds of amino acids

Nucleic Acids: The monomers of nucleic acids are nucleotides.  DNA and RNA are examples of nucleic acids.  They are the blueprint of life.  

The DNA Molecule

Lipids:  The monomers of lipids are fatty acids and glycerol. They are not considered true polymers because they are made of two different monomers.  Fats, oils, and steroids belong to this group of macromolecules.

Example of Steroid