1. The dye eosinate of methylene blue belongs to which group? a) Acidic dye b) Basic dye c) Neutral dye d) Oxazine dye 2. What is the correct order
This question has been answered
Question

1. The dye eosinate of methylene blue belongs to which group?a) Acidic dyeb) Basic dyec) Neutral dyed) Oxazine dye

2. 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


3. Which bacteria appears purple-violet colour after staining?

a) Gram-positive

b) Gram-negative

c) Both Gram-positive and Gram-negative

d) Neither Gram-positive nor Gram-negative


4. 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


5. Gram-positive bacteria are usually more susceptible to?

a) streptomycin

b) tetracyclin

c) penicillin

d) ampicillin


6. 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


7. In Gram-staining, iodine is used as a ______________

a) fixative

b) mordant

c) solublizer

d) stain


8. Which of the following is the example of Gram-negative bacteria?

a) Lactobacillus

b) Eschericia coli

c) Staphylococcus aureus

d) Bacillus subtilis

Answered by Expert Tutors

nec


risus


ac,


ec a


fa


itur


itur


ce d

m ipsum dolor
Step-by-step explanation

sumtesque dapi


e ve, ultrices ac magna. Fusce dui lectus, congue vel lao


inctum vitae odio.


uscm ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellen


sum ipsum dolor


ceacinia pulvinar to


cedictum vit


cerem ipsum dolor si

The student who asked this found it Helpful
Overall rating 100%
Get unstuck

445,696 students got unstuck by Course
Hero in the last week

step by step solutions

Our Expert Tutors provide step by step solutions to help you excel in your courses