Quiz

Question 1

How many mL of inoculum should you transfer if you are going to perform pour plating?

Answer 1

1ml

Question 2

The phase of microbial growth, which is no growth period, but there is a metabolic activity for the preparation of cell growth

Answer 2

lag phase

Question 3

Mesophiles grows best at what temperature

Answer 3

near 37 degrees celsius

Question 4

A microbial growth phase with no net increase of mass, but cells become smaller and synthesize components needed for them to survive during the no growth periods

Answer 4

stationary phase

Question 5

Fecal coliform is best described as

Answer 5

gram negative
non-spore forming bacteria
capable of fermenting lactose

Question 6

In sterilization, the required setup of the pressure cooker is at

Answer 6

15 psi for 15 mins (timer starts after the pressure reaches 15 psi)

Question 7

Presence of E. coli in your food means that

Answer 7

the contaminated food may cause mild to sever diarrhea

Question 8

What is the proper way to dispose the agar after decontamination?

Answer 8

the decontaminated agar can be thrown in the regular trash bin, since it is already a domesticated waste

Question 9

If you have 2 food samples, and you are required to perform dilution series up to 10^-4, how many plates should you prepare?

Answer 9

24 plates

Question 10

What is the plating method used in food samples?

Answer 10

spread plating