Question

1. Louis Pasteur designed swan-necked flasks to

1. examine the cause of anthrax.
2. pasteurize wine.
3. develop a vaccine for rabies.
4. trap microorganisms from the air in the neck of the flask.
5. allow dust to reach sterile broth.

2. Prokaryotic motility includes

1. archaea with flagella that rotate clockwise during a tumble.
2. archaea with flagella that rotate counterclockwise during a tumble.
3. bacteria with flagella that rotate counterclockwise during a tumble.  
4. bacteria with flagella that rotate clockwise during a tumble.  
5. bacteria and archaea with flagella that rotate counterclockwise during a run.

3. Match the organism with its characteristic. Choices will be used once.

     A. Lactobacillus acidophilus                            ____ Has efficient DNA repair enzymes.

     B. Buchnera aphidicola                                   ____ Provides nonessential amino acids to the host.

     C. Streptomyces coelicolor ____ Is used as a probiotic to treat intestinal issues.

     D. Deinococcus radiodurans                            ____ Produces many different antibiotics used in therapy

4. Explain how horizontal gene transfer plays a role in fostering genetic diversity in microbes, yet also complicates it.

Answer 1

k to He Ly lathe.cu. Lui ư.' α, timbro ' hnua aph'.dicol®. "-) 0crcus rvon

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