Lab 4: Worksheet

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Name: ______________________________

Section: _____________________________

Student ID#:__________________________

Work in groups on these problems. You should try to answer the questions without referring to your textbook. If you get stuck, try asking another group for help.

1. Label which bacteria are Staphylococcus and which are Mycobacterium. (2)

2. Why is it important to steam the slides for an acid fast stain? (1)

3. One of your plates contained manganese which is known to induce the sporulation of Bacillus, which plate was it? (3)

4. Draw what you would expect to see for plate A and B if you did not counterstain with safranin. (1)

5. Why did you not heat fix this slide? (2)

6. How does the presence of a capsule make a bacteria potentially more pathogenic to us? (1)