A microbe that produces turbid broths when tested at 1% and 7% NaCl is considered a halophile.

______________ are bead-like chains of spherical cells.

The results of growth on MacConkey agar are shown below:   Which of the following fit these data (choose all that apply)?

 Bacteria sampled from human skin are plated on TSA and EMB agar. The bacteria grow on the TSA plate but do not grow on the EMB plate. The bacteria are _____.

The Escherichia coli strain 0157:H7 is normal flora found in the GI tract of many different animals. Therefore, if this strain of E.coli were transferred to the human GI tract it would not cause any adverse effects.

What are the steps of simple staining in the correct order?

You preform the Methyl Red and Voges-Proskauer Tests on both S. epidermidis and E. coli.  S. epidermidis was positive for both the Methyl Red and Voges-Proskauer tests.  E.coli was positive for Methyl Red and negative for Voges-Proskauer.  What do these tests results tell you about S. epidermidis and E.coli’s metabolic pathways?

A student performed a gram stain on a gram positive bacillus and obtained the stain shown below:     What is the explanation of these results?

What indicates a positive Voges-Proskauer test?

A microbe that only produces turbid broths in pH tests at pH 4 is considered a(n) _____.