1 Microbiology- Module 4 exam / Questions & Expertly Verified Answers,
2025 / 2026.
Quiz____?
True or False: Growth media is best suited for distinguishing between two
similar species of bacteria. - Answer✓✓ False. Growth media is designed to simply support (and not restrict) microbial growth
Quiz____?A researcher is asked to determine which of two vials contains E coli and which contains Salmonella. Knowing both are Gram-Negative while only one of them is capable of fermenting lactose, which type of media would be best
suited: -
Answer✓✓
- Differential media distinguishes between two, often related, microbes.
Quiz____?What are the requirements of a fastidious microbe? - Answer✓✓ A fastidious microbe is an organism with complex growth requirements such that if absent it will not grow. Enriched medias thus contain these specific and essential nutrients required for the growth of a particular subset of microorganisms.
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Quiz____?
True or False: LB agar is classified as a selective, non-differential media -
Answer✓✓ False. LB agar is the most basic type of agar and like LB media supports the growth of virtually all microbes without restriction
Quiz____?What is agar used for in microbiology? - Answer✓✓ Agar is used to create a solid, smooth surface on which microbes can grow.
Quiz____?Match the following hemolytic class with its description of activity. - Answer✓✓
- No hemolytic activity
- Incomplete hemolytic
- Complete hemolytic activity
- Alpha hemolysis B
- Beta hemolysis C
- Gamma hemolysis A
Quiz____?Columbia CNA agar is most closely related to which media: -
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