BIO250L (BIO250L)
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BIO250L Lab 2 Culturing & Aseptic Technique
- Exam (elaborations) • 11 pages • 2024
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1. Proper aseptic technique is crucial to ensuring growth of pure bacterial colonies. What is one 
experimental way you can test your practices to confirm that you are using proper aseptic 
technique? One experimental way to test if you are practicing correct aseptic technique would 
be to create a control petri dish or stab tube. Monitor the control dish or tube regularly over the 
next few days to see if any bacterial colonies have grown. If you do see colonies growing, then 
proper aseptic te...
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BIO250L Lab 3 Structure & Microscopy
- Exam (elaborations) • 13 pages • 2024
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1. What determines if a bacterial cell is Gram-positive or Gram-negative? 
Gram-negative bacteria are surrounded by a thin cell wall, while gram-positive bacteria lack a 
cell wall. 
2. In this lab, both viruses and prions were introduced as acellular organisms. Do some research 
and describe one other type of acellular organism. What characteristics about this organism 
classify it as acellular? Another example of an acellular organism would be viroids. Viroids are 
small, single- stranded, cir...
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BIO250L Lab 1 Introduction to Science
- Exam (elaborations) • 11 pages • 2024
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1. What constitutes personal protective equipment? When should personal protective 
equipment be worn? Why is personal protective equipment important? 
Personal protective equipment Includes: safety goggles, face protection, gloves, aprons, 
lab coats and shoe covers. PPE should be worn whenever an experiment is being 
conducted and whenever an airborne pathogen or contaminant can be transferred to 
you. It is important to use PPE in order to protect yourself from harsh chemicals and 
viruses. P...
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BIO250L Lab 4 Selective Media & Agar
- Exam (elaborations) • 10 pages • 2024
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1. What is the difference between chemically defined and chemically complex media? Give either 
a clinical or environmental research example for which each media type would be the most 
appropriate choice for culturing microorganisms. The key difference between chemically 
defined and chemically complex media are their compositions. Chemically defined media is 
made up of all known compositions. While, chemically complex media is made up of unknown 
compositions (which can vary from batch to bat...
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Straighterline Microbiology Lab BIO250L LABS 1, 2, 3, 4, 5, 6, 7 & 8 Bundled Worksheets ( Newest Version) All Scored 100%
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Straighterline Microbiology Lab BIO250L LABS 1, 2, 3, 4, 5, 6, 7 & 8 Bundled Worksheets ( Newest Version) All Scored 100%
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Straighterline Microbiology Lab BIO250L Lab 8 Identifying an Unknown Organism Worksheet (New Version Updated) Scored 100%
- Exam (elaborations) • 7 pages • 2024
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Straighterline Microbiology Lab BIO250L Lab 8 Identifying an Unknown Organism Worksheet 
(New Version Updated) Scored 100%
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Straighterline Microbiology Lab BIO250L Lab 7 Microbial Genetics & Genetic Engineering Worksheet (New Version Updated) Scored 100%
- Exam (elaborations) • 7 pages • 2024
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Straighterline Microbiology Lab BIO250L Lab 7 Microbial Genetics & Genetic Engineering Worksheet 
(New Version Updated) Scored 100%
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Straighterline Microbiology Lab BIO250L Lab 6 Food Microbiology Worksheet (New Version Updated) Scored 100%
- Exam (elaborations) • 11 pages • 2024
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Straighterline Microbiology Lab BIO250L Lab 6 Food Microbiology Worksheet 
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Straighterline Microbiology Lab BIO250L Lab 5 Eukaryotic Microbes, Parasitology, & Viruses Worksheet (New Version Updated) Scored 100%
- Exam (elaborations) • 11 pages • 2024
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Straighterline Microbiology Lab BIO250L Lab 5 Eukaryotic Microbes, Parasitology, & Viruses Worksheet 
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Straighterline Microbiology Lab BIO250L Lab 4 Selective Media & Agar Worksheet (New Version Updated) Scored 100%
- Exam (elaborations) • 15 pages • 2024
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Straighterline Microbiology Lab BIO250L Lab 4 Selective Media & Agar Worksheet 
(New Version Updated) Scored 100%
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