Microbiology LAB

Question 1

Dry sterilization is used by………

Answer 1

Oven

Question 2

Cold sterilization is used by……….

Answer 2

Filtration

Question 3

Wet sterilization is used by……….

Answer 3

Autoclave

Question 4

What are the bacteriological incubators for?

Answer 4

For bacterial growth

Question 5

What are the cool incubators for?

Answer 5

For yeast and mold growth

Question 6

Why do we have to sterilize?

Answer 6

To avoid false results

Question 7

We need different types of incubators for…..

Answer 7

different temperatures

Question 8

Organsims requires air………

Answer 8

Aerobes

Question 9

Organsims live without air (die in the presence of oxygen)…….

Answer 9

Anaerobes

Question 10

Organsims that can live with or without air……

Answer 10

Faculative

Question 11

Organsims that prefer anaerobic media but can live in the presence of a little amount of oxygen…

Answer 11

Microaerophobic

Question 12

Organsims that can’t use oxygen but can live in its presence…..

Answer 12

Aerotolerant

Question 13

Has been formulated to be a strong reducing medium…….

Answer 13

Thioglycollate broth

Question 14

Reduces the amount of oxygen….

Answer 14

Thioglycollate

Question 15

A liquid which added to thioglycollate, it’s colorless in the apsent of oxygen and light pink in the presence of oxygen…..

Answer 15

Resazurin

Question 16

Two methods of anaerobic isolation….

Answer 16

Thioglycollate reducing agent deep agar

Question 17

When we add NaOH to pyrogallol, pyrogallol become an alkaline to absorb oxygen from air. (true or false)
+it turns brown from a colorless solution.

Answer 17

True