2. Which of the following would the MSA medium NOT be considered: Select one:
a. Complex medium
b. Chemically defined medium
c. Differential medium
d. Selective medium
3. If you took a swab from a patient and cultured it on a MSA plate, which of the following could be identified by just using this test? Select one:
a. Staphylococcus epidermidis
b. Escherichia coli
c. Staphylococcus aureus
d. Micrococcus luteus
4. If you streaked the 3 organisms in this lab on a PEA plate and after incubating for 2 days at 37 degrees Celcius nothing grew (but they did grow on a NA plate made at the same time and grown in the same conditions), which of the following is the most likely cause for this result? Select one:
a. The agar was toxic.
b. The beef extract was bad.
c. The temperature was too low.
d. Too much phenylethyl alcohol was used
. e. The temperature was too high.
5. Why is the NA plate inoculated in addition to the Columbia CNA with 5% sheep blood agar plate? Select one:
a. Used to compare growth on non-selective medium
b. Used as second selective medium
c. Used to promote hemolysis
d. Used because it is easier to see
e. Used as a practice plate
2. Which of the following would the MSA medium NOT be considered: Select one:
a. Complex medium
b. Chemically defined medium
c. Differential medium
d. Selective medium
3. If you took a swab from a patient and cultured it on a MSA plate, which of the following could be identified by just using this test? Select one:
a. Staphylococcus epidermidis
b. Escherichia coli
c. Staphylococcus aureus
d. Micrococcus luteus
4. If you streaked the 3 organisms in this lab on a PEA plate and after incubating for 2 days at 37 degrees Celcius nothing grew (but they did grow on a NA plate made at the same time and grown in the same conditions), which of the following is the most likely cause for this result? Select one:
a. The agar was toxic.
b. The beef extract was bad.
c. The temperature was too low.
d. Too much phenylethyl alcohol was used
. e. The temperature was too high.
5. Why is the NA plate inoculated in addition to the Columbia CNA with 5% sheep blood agar plate? Select one:
a. Used to compare growth on non-selective medium
b. Used as second selective medium
c. Used to promote hemolysis
d. Used because it is easier to see
e. Used as a practice plate