Lab 6continued-7

Question 1

LAB6. A pure culture is defined as..?

Answer 1

A medium growing one, and only one, intended species of micro organism

Question 2

LAB6. A mix culture is

Answer 2

One that contains two or more microbes growing together on purpose

Question 3

LAB6. A contaminated culture is

Answer 3

A medium or article that has accidental, or unwanted, micro organisms in it

Question 4

LAB6. Petri plate should always be placed____ in a rack for incubation

Answer 4

Agar side up

Question 5

LAB6. Sterile means

Answer 5

Completely devoid of life

Question 6

LAB6. Colony

Answer 6

A visible mass of micro organisms on a solid media

Question 7

LAB6. Aerosol

Answer 7

Micro organisms of liquid, droplets, or particles in the air

Question 8

LAB6. Is MSA a differential medium or a selective medium or both?

Answer 8

Both.
Differential because it allows the changes of color on the auger that helps ID species

Selective media because it inhibits the growth of some species

Question 9

LAB7. Streak plate

Answer 9

A technique to isolate a pure colony from a mixed culture

Question 10

LAB7. Pour plate is made by

Answer 10

Inoculating melted agar with bacteria, and then pouring the agar into a empty petri plate to harden