Bio safety levels (BSL) measure what? CORRECT ANSWER an organism’s controllability, infectivity, virulence, pathogenicity, antibiotic resistance,
... [Show More] vaccine, treatment, mortality.
BSL 1 CORRECT ANSWER does not normally cause disease in people
BSL 2 CORRECT ANSWER Associated with disease
BSL 3 CORRECT ANSWER indigenous/exotic agents that may have serious or lethal consequences and with potential for aerosol transmission
BSL 4 CORRECT ANSWER dangerous/exotic agents of a life-threatening nature or unknown risk of transmission
Containment CORRECT ANSWER safe methods and procedures to handle micro organisms
Aseptic technique prevents contamination of CORRECT ANSWER You
Others
Experiment
Work Area
External Environment
Ubiquitous CORRECT ANSWER found everywhere
Pathogen CORRECT ANSWER microorganisms that cause disease
Opportunistic pathogen CORRECT ANSWER cause disease in right circumstances
Inoculation CORRECT ANSWER implantation of microorganisms on or in media
Culture CORRECT ANSWER cultivation of the micro organisms
What has actually grown
Turbid CORRECT ANSWER cloudy inoculation of growth
Colony CORRECT ANSWER A discrete mass of millions or more cells ideally from one cell
Points of first few labs CORRECT ANSWER practice aseptic technique
Sterile CORRECT ANSWER completely free of all life
Pure culture CORRECT ANSWER one type of colony
Mixed culture CORRECT ANSWER more than one type of colony
Parfocal CORRECT ANSWER once it’s in focus it stays in focus as you move un in magnification
Parcentric CORRECT ANSWER What is in the center will stay in the center
Why is oil needed for high magnification CORRECT ANSWER oil is needed to refract light the same as glass does
4x CORRECT ANSWER scanning
10x CORRECT ANSWER low power
40x CORRECT ANSWER high power (high dry)
100x CORRECT ANSWER oil immersion
Total magnification CORRECT ANSWER ocular magnification X objective magnification
Working distance CORRECT ANSWER space between slide and lens
As magnification increases field of view.... CORRECT ANSWER decreases
Resolution CORRECT ANSWER clarity of an image produced by a set of lenses
Resolving power CORRECT ANSWER ability of a lens to separate tow objects in a microscopic field
Function of wavelength of light and a property of the lens called numerical aperture
Numerical aperture CORRECT ANSWER mathematical expression that describes the ability of the condenser lens to concentrate light rays from the light source
Some refracted light is always lost
What are the four factors for maximum resolution and adequate contrast CORRECT ANSWER Blue filter
Condenser position
Diaphragm position
Immersion Oil
What does a three lens system consist of? CORRECT ANSWER Occulars
Objectives
Condenser [Show Less]