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Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet. Submissions
without proper formatting, all required photos or sufficient responses will be rejected.
Pre-lab Questions
1. This lab includes two experiments that each look at different aspects of culturing
microorganisms onto growth media. What concepts does each experiment focus on? Why do you think
these concepts are important to the field of microbiology?
The two experiments center on two fundamental ideas in microbiology: bacterial inoculation and aseptic
method. Preserving the pure state of bacterial cultures, avoiding contamination throughout microbiological
operations, and guaranteeing accurate results depend on the aseptic technique. The cultivation and
research of microbial populations require bacterial inoculation and culture techniques, which allow the
isolation of specific strains for in-depth examination. These basic ideas in microbiology provide the
knowledge and abilities necessary for precise testing, the manipulation of microorganisms, and a wide
range of applications in environmental research, biotechnology, and medicine.
2. In this lab, the experiments will allow or call for the use of four inoculation tools. List these tools and provide
a scenario in which you would use each tool.
○ Inoculation loops: these help move microorganisms from one plate to another and are used for
harvesting inoculum from cultures.
○ Sterile cotton swabs are used to gather microbiological samples from a range of surfaces and start a
culture plate.
○ Inoculation needles: these are used to inoculate semi-solid media or stab tubes and gather
germs from a specific area of culture..
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Lab 2 Culturing & Aseptic Technique BIO250L
○ Sterile plate spreaders: AreThe spread plate technique is employed to inoculate plates, which distributes
microbial colonies uniformly.
3. Describe a piece of equipment used in biotech labs to extend the growth pattern of microbes. Focus
particularly on those used with E. coli used to make human insulin.
Chemostat; A chemostat is a device used to maintain the growth pattern of lab cultures continuously. This
keeps adding fresh medium, which restricts a necessary nutrient, promotes
bacterial growth, and eliminates bacterial cell waste.
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