Bacterial Colonies in Your Environment

Biology research science laboratoryoratory Report Bacterial Colonies in Your Environment Purpose The purpose of this testing ground is to culture, psychoanalyse and describe microorganisms (bacterial colonies) from sources in daily surroundings that we be open(a) to. Variables and Controls The in underage variable was the places we decided to wipe up for bacteria. The hooklike 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 pabulum was in the agar plate. Materials -a sterilized agar plate (with lid) -markers -soap and water supply -clear tape - stereotypic cotton swabs Lab Safety In this lab we deprivati geniusd to wash our manpower constantly before and after the lab. We were traffic with bacteria that has the tycoon to be harmful and to avoid unsoundness/sickness we need to thoroughly wash our hands an d be careful close to the bacteria. A nonher 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 catch up with sure that the lab results were exact. The plates index fetch not been decent cleaned beforehand or the bacteria in the air/where they were stored might still nonplus on the plate. Due to those bacteria the lab results might earn turned out different! ly because we cultivated 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 pour 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 walloping box, or a previously...If you want to get a in force(p) essay, separate it on our website: OrderCustomPaper.com

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