Bio 2010 - Microbiology » Summer 2023 » Lab Quiz 2

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
Acid-fast cells resist the acid destain due to the presence of __________ in their cell envelope.
A.   phospholipids
B.   peptidoglycan
C.   mycolic acids
D.   lipopolysaccharides
Question #2
__________ is the primary stain used in the endospore stain.
A.   safranin
B.   crystal violet
C.   carbolfushin
D.   malachite green
Question #3
Following the endospore stain, vegetative (living cells) stain
A.   blue
B.   green
C.   pink or red
D.   purple
Question #4
Place the steps of the Gram stain in the correct order: 1. 95% acetone alcohol 2. crystal violet 3. safranin 4. iodine
A.   1-3-2-4
B.   2-1-4-3
C.   2-4-1-3
D.   1-2-3-4
E.   4-3-2-1
Question #5
The primary stain used in the Gram stain is
A.   iodine
B.   safranin
C.   crystal violet
D.   acetone-alcohol
Question #6
The secondary stain used in the acid-fast stain
A.   safranin
B.   carbolfushin
C.   crystal violet
D.   methylene blue
Question #7
Which of the following does not use a destain (decolorizing) agent?
A.   Gram stain
B.   endospore stain
C.   acid-fast stain
Question #8
Which of these bacterial genera are endospore-formers? 1. Clostridium 2. Staphylococcus 3. Mycobacterium 4. Bacillus
A.   2 and 3
B.   1 and 2
C.   1 and 4
D.   3 and 4

Need help with your exam preparation?

Existing Quiz Clients Login here