1. Assignment 3 Part 3

2. 1.Which of these panels may represent bacteria from the genus Bacillus? 2.Which of these panels show bacteria in a streptobacilli arrangement? (Answers may be none or more) AB CD

3. 3.A Gram stain was performed on these bacteria of the genus Lactobacllus, which is typically Gram positive. The result shown above could be obtained if which step of the Gram staining technique was omitted?

4. 4.What color would each of the structures pointed at be if the counterstaining step had been omitted? 5.Of what color would each of the structures pointed at be following a typical Gram staining reaction? 6.Are these bacteria typically Gram positive or negative? a b c

5. 7.What differential staining technique is demonstrated in this picture? 8.To which genus do the fuchsia colored bacteria belong too? 9.What color would the fuchsia colored bacteria be following a typical Gram stain? 10.What unique chemical component does the cell wall of these bacteria contain?