The α-amino group of many amino acids is transferred to α-ketoglutarate to form glutamate, which is then oxidatively deaminated to yield ammonium ion (NH4+).
I think the correct answer from the choices listed above is option A. Horned toads squirt blood from their eyes as a means of evading predators. This is their final defense action which frightens their predators. Hope this answers the question. Have a nice day.
