BIOD 171

L4: Lab Exam 4

Question 1

Not yet graded / 3 pts

What type of media is best used to eliminate certain bacteria from within a mixed

culture?

Your Answer:

Selective Media

Selective media

Question 2

Not yet graded / 4 pts

According the lab module, what type of agar plate is the most commonly used nutrient

agar? What color is it?

Your Answer:

LB Agar

light yellow

LB agar; Light (or pale) yellow

Question 3

Not yet graded / 3 pts

What was the name of the selective agar plate (shown below) that is similar to a blood

agar plate?

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Your Answer:

MacConkey Agar

MacConkey agar

Question 4

Not yet graded / 2 pts

What type of bacteria does MacConkey agar select for?

Your Answer:

Gram negative bacteria

Gram-negative bacteria

Question 5

2 / 2 pts

Sorbitol MacConkey (SMAC) agar is:

Selective media

Differential media

Correct!

Selective and differential media

None of the above

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