9. Microscopes

Gram Stain

Multiple Choice
In the Gram stain, why must fresh (young) bacterial cells be used to obtain reliable results?
2
views
Multiple Choice
In a standard Gram stain, what color do Gram-negative bacteria typically appear after the safranin counterstain is applied?
2
views
Multiple Choice
Which of the following would you include when performing a Gram stain?
41
views
Multiple Choice
Which of the following correctly lists the steps of the Gram stain procedure in the proper order?
30
views
Multiple Choice
After performing a Gram stain, why do Gram-positive bacteria appear purple under the microscope?
56
views
Multiple Choice
The Gram-staining procedure is best described as which of the following?
60
views
Multiple Choice
In a completed Gram stain procedure, what is the final color of Gram-negative bacteria when observed under a microscope?
61
views
Multiple Choice
Which dye stains gram-negative bacteria pink during the Gram stain procedure?
43
views
Multiple Choice
1. Why is it important to use fresh bacterial cells when performing a Gram stain?
62
views
Multiple Choice
In the Gram stain procedure, which reagent is used as the decolorizer to remove the crystal violet–iodine complex from Gram-negative cells?
1
views
Multiple Choice
In the Gram stain procedure, what is the correct sequence of reagents applied to a heat-fixed bacterial smear (excluding the initial water rinse)?
3
views
Multiple Choice
Which of the following describes the correct sequence of the Gram stain procedure?
62
views
Multiple Choice
Which of the following answers lists the steps of gram-staining in the correct order?
1408
views
4
rank
Multiple Choice
Which of the following reagents is used to stain gram negative cells pink (or red) in the gram stain?
944
views
7
rank
Multiple Choice
Which of the following statements is false?
1104
views
5
rank