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All of the following steps are involved in the aerobic electron transport chain. Which step happens first?

  You are growing a bacterium in the lab to follow it’s growth. This bacterium divides every 30 minutes and you allow it to grow for 3 hours. The first hour there is no increase in number but then the increase is exponential. You can conclude this bacterium has a lag phase of 1 hour. 

Are antibiotics typically used to treat Salmonella infections?  Why or why not?

All of the enteric media (EMB, MacConkey, HE, etc.) incorporate the following sugar for fermentation demonstration:

Which of the following organisms is termed “triple decarboxylase negative” and has been implicated in a nationwide outbreak of septicemia from contaminated IV fluid?

What two bacteria produce swarming colonies on nonselective media such as sheep blood agar?

Which of the following set of tests best differentiate Shigella from E. coli?

This organism has been documented as causing nursery outbreaks of neonatal meningitis and brain abscesses:

You have isolated a gram negative bacillus.  What is the first biochemical test to perform in order to determine the identification tests to set up?

An unheated suspension of Salmonella Typhi typically produces agglutination of Vi antisera.  Heating the same suspension is necessary to determine which other antigen?