Question

In the Osmotic Pressure lab, the results are based upon turbidity measurements. A relatively low turbidity suggests:

Select one:

a. More bacterial growth

b. The culture will be relatively cloudy

c. A color chang occured

d. Less bacterial growth

If the Staphylococcus aureus grew more in a 5% NaCl environment than it did in 2% or 11% NaCl, you would conclude that it is probably a:

Select one:

a. Extreme halophile

b. Osmotolerant

c. Intestinal bacteria

d. Halophile

False negatives are likely in a test with low:

Select one:

a. Sensitivity

b. Specificity

c. Experimental variables

d. 10% bleach solution

e. Sharps container

An experimental result that is positive when the microbe of interest was present is a:

Select one:

a. A false negative

b. A false positive

c. A true negative

d. A true positive

e. Low sensitivity