Examlex
Plants convert nitrogen into ammonia. This biological nitrogen fixation is effected by enzymes called nitrogenases. The enzymes assist in the transfer of electrons. The unbalanced reaction equation is
N2(g) + H+(aq) + e- H2(g) + NH3(aq)
What is the stoichiometric coefficient for the electrons in the balanced reaction equation?
Tonometry
A diagnostic test to measure the pressure inside the eye, used primarily in screening and monitoring for glaucoma.
Nyctalopia
Night blindness, a condition making it difficult or impossible to see in low light or darkness.
Nyctal
Relating to the night; often used in the context of nyctalopia, or night blindness.
Radial Keratotomy
A surgical procedure to correct myopia (nearsightedness) by making radial incisions in the cornea to flatten it.
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