phenol red lab

What bacteria turned red at the bottom and remained yellow at the top

P. aeruginosa

P. aeruginosa has

has a oxidative pathway and can only break down the sugar at the top of the tube where oxygen is present and can’t continue throughout the rest of the tube

P. aeruginosa is a

non-fermenter and a obligated aerobe which indicates it only grows on the top

What organism turned yellow?

E. coli

What did he E. coli do in this lab.

it had a fermentation pathway and was the fermenter

e coli had is a

facultative anaerobe meaning that it can grow as an anaerobe or without oxygen but it grows best in the presence of oxygen.