Microbiology Lab Exam 1: Safety and Microscopy Questions And Answers Rated A+ Assured Satisfaction.

BSL-1 - correct answers Do not cause disease in healthy individuals Standard practices that are common in all labs BSL-2 - correct answers Moderately hazardous and can cause some mild diseases Lab coats must be warn and gloves and face protection may be used as well BSL-3 - correct answers Can cause serious and lethal disease through respiratory transmission Light Microscopes - correct answers Use light to observe specimen Bright Field Microscopes - correct answers Light microscope that views specimen against bright background Compound Microscopes - correct answers Light microscope that uses a series of magnifying glasses. Magnification - correct answersIncrease in apparent size Resolution - correct answersThe ability to distinguish fine detail. The limiting factor in magnification. Micron - correct answers1 micrometer 1 x10^-6 Objective Lenses - correct answersScanning- 4X Low power- 10X High power- 40X Oil Immersion- 100X Parcentral - correct answersCenter of field remains in the center even when higher objective is used. Parfocal - correct answersOnly fine focus is required when moving to higher objective. Oil Immersion - correct answers1000X magnification Oil has same refractive index as glass so light rays are not bent as they are through air. Ocular Micrometer - correct answersLow power- 10 microns High power- 2.5 microns Oil Immersion- 1 micron Total Magnification - correct answers10X x 100X = 1000X