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The tube indicated contains broth from a MR-VP broth tube to which methyl red has been added and is __________.

Which of the following make(s) MacConkey agar selective?

The peptone in the EMB agar serves as a(n) __________.

Nitrate reduction is responsible for __________.

Which of the following indicates a positive catalase test?

Which of the sections indicates the fermentation of mannitol salt agar?

Does MacConkey agar contain a pH indicator? [Yes]  If so, what is it called? [Dye]

MacConkey agar is used to isolate and differentiate members of the Enterobacteriaceae based on the ability to ferment lactose.

Is hemolysin activity of Streptococci best under aerobic or anaerobic conditions? _________________

The most important operational risk factor in performing microbiology procedures is __________.