Which of the following are sterile and which are not: benchtop test-tube rack hands and fingers air in the microbiology lab inner surfaces of uninoculated test tubes notebook amd lab manuals clothing flame loop outer surfsces of uninoculated test tube Tongues pens and pencils inner surface of your nose and resident nose globins Secondly, how could you tell if your E. Coil slant was contaminated by M. Luteus?
Microscopic examination
The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.
Gram Staining
Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.
Which of the following are sterile and which are not:
benchtop
test-tube rack
hands and fingers
air in the
inner surfaces of uninoculated test tubes
notebook amd lab manuals
clothing
flame loop
outer surfsces of uninoculated test tube
Tongues
pens and pencils
inner surface of your nose and resident nose globins
Secondly, how could you tell if your E. Coil slant was contaminated by M. Luteus?
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