Lab Exam 1 Flashcards
What is the chemical inside antibacterial soap?
Benzalkonium Chloride
What is the chemical inside hibiclens soap?
Chlorhexidine
What are the names of the 4 objective lenses?
(4x) scanning lens, (10x) low power lens, (40x) high power lens, and (100x) oil immersion lens
Immersion oil does amazing things like
increase the resolution of lens
Resolution
the ability of lens to distinguish fine detail and structure
Numerical aperture
ability of lens to capture light
Iris diaphragm function
controls the amount of light from lamp
condenser lens function
used to focus light from lamp
Staphylo
cluster
Strepto
chain
Culture
when microbes grow in the presence of nutrients
What are the four major types of media?
Complex, Enriched, Selective, Differential
Example of complex media
TSA
Both Gram-negative and Gram positive bacteria will grow well
Example of enriched media
Blood agar
Example of selective media
Sabouraud Dextrose Agar
Selects for fungi only
Chemicals ingredients in Sabouraud Dextrose Agar
Acidic pH and Antibiotics
Chemical ingredients in MacConkey Agar
Crystal violet and Bile salt
Chemical ingredients in EMB
Eosin and Methylene Blue
Chemical ingredients in HE Agar
Bile salt
Example of Gram-Negative bacteria
E.coli
Example of Gram-Positive
genus Staphylococcus
Example of Lactose-fermenting Gram Negative Bacteria
E.coli
Example of non-Lactose fermenting Gram Negative Bacteria
genus Salmonella
Examples of Alpha-hemolytic bacteria
Streptococcus pneumoniae
Examples of Beta-hemolytic
Staphylococcus aureus
Examples of Gamma-hemolytic
Staphylococcus epidermis
Quadrant streak plate method purpose
to dilute the bacterial population