uncharged particle that resides in an atom's nucleus; has a mass of one amu

phagocytic leukocyte that engulfs and digests pathogens

group of automated techniques for rapid DNA sequencing

conversion of ammonium into nitrite and nitrate in soils

process by which gaseous nitrogen is transformed, or “fixed” into more readily available forms such as ammonia

enzyme that is responsible for the reduction of atmospheric nitrogen to ammonia

see inert gas

neural processing of noxious (such as damaging) stimuli

point along the stem at which leaves, flowers, or aerial roots originate

gaps in the myelin sheath where the signal is recharged

novel structure on the roots of certain plants (legumes) that results from the symbiotic interaction between the plant and soil bacteria, and is the site of nitrogen fixation

specialized structures that contain Rhizobia bacteria where nitrogen fixation takes place

solute that does not break down into ions when dissolved in water

dicot that stores food reserves in the developing cotyledon

plant that lacks vascular tissue, which is formed of specialized cells for the transport of water and nutrients