In great detail, provide a step-by-step description of how the lab (Bacteria of the GI Tract lab) would be performed from start to finish. Start with you receiving a plate of bacteria.

A bacteriurea is significant if microorganisms present (per ml) are AT LEAST in excess of     1000     10000     100000     1000000     10000000

What can you expect to find in lab test based on the fact that the pathogen is an intestinal pathogen?

Discuss how you will limit your exposure to the bacterial cultures you will be using.

Based on the growth you saw on your Lee’s Agar plate, what conclusions can you make about the bacteria present in the yogurt sample?

The student advises using the same selection procedures and inoculating a 5 mL overnight culture with the transformed cells instead of searching for transformed coli on LB agar plates in order to save time. Why isn't this a wise decision?

Pick either of these media: (EMB or HE) and describe (again, in your own words) how the chemical ingredients in that medium work to make it both "selective" as well as "differential"

35.  There is a  mystery  and an unusual bacterial disease in Contra Costa County. Researchers as well as physicians  conclude that  it  must be controlled  before it  goes out of hand.  They also find that the pathogen has a extended generation time. What antibiotic do you suggest to use? Group of answer choices Rifamycin Penicillin Quinolones ( such as ciprofloxacillin) Tetracycline Sulfa drug and trimethoprim combination   36.   Which of the following best describes action of the ciprofloxacillin in prokaryotes ? Group of answer choices inhibits RNA polymerase, consequently no RNA synthesis in bacteria interferes with DNA replication by randomly nicking the DNA enhances DNA gyrase activity in killing UTI pathogens binds and modifies elongation factor ( ADP ribosylates) inhibits prokaryotic translation by binding to 50S subunits and arresting translocation inhibits DNA gyrase; prevents snapping back of the separated strands at replication fork

serology (elisa) lab: Why did you need to wash the wells after every step?

Robert Koch developed a set of criteria (postulates) for conclusively demonstrating the aetiology (specific cause) of an infectious disease. Which of the following is not a postulate?     The infectious agent must be isolated and cultured in vitro     The disease is reproduced when a pure culture of the infectious agent is inoculated into a new susceptible host     The infectious agent can be recovered from the experimentally-infected host     The infectious agent is present in most cases of the disease