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consists of several lenses that concentrate light on the slide by focusing it into a cone.
this part of the microscope transmits the image from the objective lens to the ocular lens
How do you pour a petri plate?
Melt the agar deep in water bath at 100C, cool agar deep to touch in 50C water bath, use quickly or it will solidify again, turn petri dish with lid on top, gently mix media and pour onto plate, swirl petri dish to ensure uniform coverage, then let cool until solid 10-15 minutes with lid ajar
Made fro melted agar deeps poured in petri dish; It has a large surface area to view and count colonies
Composition of TSA (Tryptic soy agar)
peptone from casein, peptone from soymeal, sodium chloride, agar1.5%
established to keep bacteria, fungi, viruses, and other microbes under control while they are being studied.
If you were given an unknown culture in the lab, which biosafety level would you observe?
BSL-2 or the highest available in the lab
this part of the microscope is used to increase and decrease the light transmitted through the slide
If you are going to inoculate liquid media, and you chose to sample a site that is dry, what should you do before drawing the sterile swab across the surface to be tested?
dip the swab in distilled water
this term is used to describe the bacterial growth that completely covers the surface of a broth tube
this term is used to describe the large masses of bacterial growth that is seen suspended within the mediu of a broth tube
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