1.  Consider an acid clot in Litmus Milk Medium. It can appear as pink or white with a pink band at top.

a. Explain the differeent conditions that would produce each of these occurences.

b. If the reaction to produce a white colour occurs, why does the surfaace remain pink?

2.What is the principl difference between a bacterial species that produces a curd in litmus milk and a species that does not.

3. What reaction would you predict from an organism growing in litmus milk that has the following results in the other media?

a. A clear zone around the growth on a milk agar plate.

b. A/- in PR lactose broth.

c. A/G in PR lactose broth.

d. K in PR glucose broth.