Mar '14
27
MCAT Question of the Day | MCAT Course


  • Q:

    A researcher has an agar plate covered with a lawn of E. coli. She adds a drop of a unknown substance, and the next day there is a clear spot on the plate where the substance was added. This substance could be:

    I. A virus undergoing the lytic cycle.
    II. A virus undergoing the productive cycle.
    III. A chemical that is toxic to prokaryotes.


     

    A

    I only

    B

    III only

    C

    I and III only

    D

    I, II, and III




    Tags: Prokaryotes | Suggest a tag
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