They consist of 1 to 15 monosaccharides. C. proteins 1. There are 10 to 100 million different kinds of proteins. They are the key to life's diversity. The shapes and functions of cells depend on different types of protein.
Enzymes facilitate virtually all the processes in the cells.
A small bacterium, escherichia coli or e coli, has many different strains as many as 600 to 800. The building blocks of protein are called amino acids. All living organisms contain the same 20 amino acids. Amino acids are joined by covalent bonds which means they share electrons. They link together to form polypeptides.