BIOD 171/Microbiology Lab 1-9 Exam Portage Learning
1. What type of bacteria does MacConkey agar select for? Gram-negative bacteria 2. Sorbitol MacConkey (SMAC) agar is: A. Selective media B. Differential media C. Selective and differential media D. None of the above C 3. What pathogen is best identified using a SMAC agar? E coli O157:H7. SMAC agar specifically differentiates between non-pathogenic E coli and the pathogenic E coli strain O157:H7. 4. What is the purpose of doing a 4-phase dilution streak? The purpose of a 4-phase dilution streak is to isolate individual bacterial colonies. 5. If you were required to grow 4 types of bacteria on a single agar plate without cross contaminating the samples, what method would you use? Quadrant growth method 1. Based on the 4-phase dilution streaking experiment, in what phase were bacterial isolates (colonies) observed?
Document information
- Uploaded on
- February 21, 2023
- Number of pages
- 22
- Written in
- 2022/2023
- Type
- Exam (elaborations)
- Contains
- Questions & answers