LAB Flashcards
_______ is the lowest temperature that kills all cells in broth in 10 mins
Thermal Death Point
To kill the microbes which may be present in the dairy cow ________ method is commonly used in milk industry.
Pasteurization
Autoclaving is a process that uses ______ heat methods
Moist
Give one possible reason that why just counting the number of bacteria is not enough for judging the safety of the product.
Low number of bacteria does not mean Non-Pathogenic
Calculate the concentration of bacteria in milk sample.
50x10^4
Identify the types shown in the blood smear
RBC, Platelets, Lymphocytes, Neutrophils and Basophils
_______ reduce the number of microbes on living surfaces, such as our skin, while _____ reduce the number of microbes on non-living surfaces such as surface of lab benches.
Antiseptics, Disinfectants
Triple sugar iron (TSI) agar is used to diffrentiate and identify gram _____ enteric microbes.
Negative
The clear zone shown here around the antibiotic disc is called _______.
Zone of Inhibition
An inverted inner vial is placed inside the culture tube in order to detect gas production is called ______ tube.
Durham Tube
Compare with other agents tested in the following experiment, _______ is most effective in inhibiting the growth of Stahylococcus aureus because it shoes the largest________.
Hydrogen Peroxide, Zone of inhibition
______ are viruses that infect bacteria. Identification of bacterial strains using inefecctivity by different _____ is called ______.
Bacteriaphages, phages, phage typing
Identify the cell type ______. This type of cell is usually elevated during parasitic infection and allergic reactions.
Eosinophil
2 green 1 Blue
Enterobacter, Permeases and Alkaline
List 3 anti-biotics used in the lab and describe their mechanism of action.
Penicilin - disrupts cell synthesis
Tetracyclines - protein synthesis
Streptomycin
How bacteria become resistant to antibiotics?
New mutations of chromosomal genes and acquisition of R-Plasmids via transformation
Which of the following bacteria are infected by T-phage?
E. coli B.
______ is the standard method used for antibiotic-sensitivity testing.
Kirby-Bauer method
