In the biochemical assay lab, test tubes a and b were treated with onpg. after 15 minutes of incubation, test tube a turned a yellow color while test tube b remained a clear color. test tube contained which reacted with onpg to produce and .

Test tube A contained b-galactosidase which reacted with ONPG to produce galactose and o-nitrophenol

i do not know and i have a 100 in this class

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.