Quiz Questions Flashcards
Name the three objectives commonly used on a clinical microscope
10x, 40x, 100x
What is the function of the condenser on a microscope?
Composed of multiple lenses that focus light on the slide
What is the function of the iris diaphragm on a microscope?
An adjustable light barrier within the condenser that regulates the amount of light passing through the specimen
How is total magnification calculated in the compound microscope?
The ocular magnification is multiplied by the objective magnification to equal the total magnification on the specimen/sample
Why does a gram stain differentially stain G+ and G- bacteria?
Because of the different structures in the two cell walls
What is the difference between a gram stain and a diff quick stain?
A gram stain can differentiate and stain different cells different colors while the diff quick stain will stain all cells the same color
Name examples of gram-positive bacteria
- Staphylococcus
- Streptococcus
- Clostridium
- Listeria
- Cryptococcus
- Lactobacillus
Candida is also an important G+ but it is a fungus
Name examples of gram-negative bacteria
- E. coli
- Salmonella
- Campylobacter
- Pseudomonas
- Vibrio
- Moraxella
- Proteus
- Aspergillus
What does the term ‘normal flora’ refer to?
All the microbiota that inhibits a specific area
What are the two morphological forms of fungi?
Yeast and Hyphae
The appropriate sample to detect malaria is ______
Whole blood
Agar is a liquid medum in which one can grow a “soup” of bacteria.
True or False?
False
Innoculating loops can be sterilized in a Bunsen burner and must be used before they cool off
True or False?
False
What are fume hoods designed to do?
Prevent the release of fumes into the workspace by having negative pressure
What are laminary flow hoods designed to do?
Maintain contaminants from the workspace in the hood
