All organisms contain at least 20 different types of amino acids. Some bacteria are able to make all amino acids, unlike humans which cannot make about 8 amino acids for which they must rely on other organisms, like microbes and plants, to make for them. Legume - a flowering plant which bears its seeds in pods. All legumes looked at so far have a symbiotic association with root-colonizing bacteria called rhizobia. Legumes includes plants such as clover, peas, beans.
Legumes contain seeds, such as peas and beans, that are rich in protein.
Nodule -a special structure of roots of certain plants which contain the symbiotic, nitrogen fixing bacteria Rhizobium. Nutrients - the necessary components of food that microbes and all life require to exist and grow. Essential elemental nutrients include such basic molecules as nitrogen, carbon, oxygen, hydrogen, phosphorus, potassium and trace minerals. Protein - an important molecule that is found in all life. Proteins are polymers, that is, long strings of individual amino acids.