Microbial Stains

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Microbial Stains

Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is the example of Gram-negative bacteria?
A
Lactobacillus
B
Eschericia coli
C
Staphylococcus aureus
D
Bacillus subtilis
Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the correct order of staining reagents in Gram-Staining?
A
Crystal violet, alcohol, iodine solution, safranin
B
Crystal violet, iodine solution, alcohol, safranin
C
Crystal violet, safranin, alcohol, iodine solution
D
Iodine solution, crystal violet, alcohol, safranin
Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the staining technique helps in demonstrating spore structure in bacteria as well as free spores?
A
Acid-fast stain
B
Endospore stain
C
Capsule stain
D
Flagella stain
Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Gram-positive bacteria are usually more susceptible to?
A
streptomycin
B
tetracyclin
C
penicillin
D
ampicillin
Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following are true for Gram-negative bacteria?
A
upon alcohol treatment, the permeability of the cell wall increases
B
crystal violet-iodine (CV-I) complex is extracted
C
pore size decreases and the CV-I complex cannot be extracted
D
alcohol treatment increases the permeability of the cell wall and the CV-I complex can be extracted
There are 5 questions to complete.