Bacterial Colonies in Your Environment

Biology research research science laboratoryoratory Report Bacterial Colonies in Your Environment Purpose The purpose of this testing ground is to culture, run into and describe microorganisms (bacterial colonies) from sources in daily surroundings that we be undefendable to. Variables and Controls The in underage variable was the places we decided to mop up for bacteria. The reliant variable was the types of bacteria that grew within the nutrient agar plate The controlled variables were the temperature in the sir, how skintight the agar plate was sealed and how much food was in the agar plate. Materials -a sterilized agar plate (with lid) -markers -soap and piddle -clear tape - sterilized cotton swabs Lab Safety In this lab we deprivati unmatchedd to wash our manpower constantly before and after the lab. We were dealings with bacteria that has the tycoon to be harmful and to avoid unhealthiness/sickness we need to thoroughly wash our hands and be careful close to the bacteria. Another precaution to take was to not cough into or put whatever bacteria from our bodies into the agar plate. Those bacteria could be extremely dangerous and shouldnt be cultivated. Observations Located on final page(s) Application Questions 1.

The purpose of heat the agar plates in the autoclave prior to inoculating them with microorganisms was to break sure that the lab results were exact. The plates office fetch not been flop cleaned beforehand or the bacteria in the air/where they were stored might still nonplus on the plate. Due to those bacteria the lab res ults might stimulate turned out differently! because we courtly different bacteria from places we did NOT swab. To prevent this we must sterile the plates. Bacteria dies at high temperatures so the plates were heated to pull down off any lingering bacteria that may have been present on the agar plate. 2.A sterile cotton swab was use as opposed to a unshakable one because befoulment might have occurred and twisted the lab results. If a regular cotton swab was used from a salient box, or a previously...If you want to get a abounding essay, separate it on our website: OrderCustomPaper.com

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