Why do bacteria repel the dye nigrosin nigrosin is a

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Biology: Concepts and Applications
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Chapter 19 / Exercise 10
Biology: Concepts and Applications
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4. Why do bacteria repel the dye nigrosin?
1. What is one disadvantage of heat fixing a sample?
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Biology: Concepts and Applications
The document you are viewing contains questions related to this textbook.
Chapter 19 / Exercise 10
Biology: Concepts and Applications
Starr/Evers
Expert Verified
2. What is the proper way to dispose of all materials used during the lab?
3. What are the Gram status, shape and identification of organism #2 from the Gram stain procedure?
4. What are the Gram status, shape and identification of organism #5 from the Gram stain procedure?
LAB 41. What type of media is best used to eliminate certain bacteria from within a mixed culture?
2. According the lab module, what type of agar plate is the most commonly used nutrient agar? Whatcolor is it?
3. What was the name of the selective agar plate (shown below) that is similar to a blood agar plate?
1. What type of bacteria does MacConkey agar select for?
2. Sorbitol MacConkey (SMAC) agar is:
3.What pathogen is best identified using a SMAC agar?
4. What is the purpose of doing a 4-phase dilution streak?
5. If you were required to grow 4 types of bacteria on a single agar plate without cross contaminatingthe samples, what method would you use?
1. Based on the 4-phase dilution streaking experiment, in what phase were bacterial isolates (colonies) observed?
2. Identify the plating method (below) as demonstrated in the lab.
3. Identify the organism growing on the TOP half of the agar and describe the observed hemolytic properties.

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