Salmonella and Shigella, both causes of diarrhea, can be distinguished by which of the following tests?
A. lactose fermentation
B. oxidase test
C. hydrogen sulfide (H2S) production
D. urease test
E. pigment production
Answer: C
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The fungus Drechslerella anchonia, a carnivorous fungus that forms sacs containing eight spores, belongs to the phylum
A. Chytridiomycota. B. Deuteromycota. C. Zygomycota. D. Basidiomycota. E. Ascomycota.
An enzyme lowers activation energy by ____
a. keeping substrates apart b. orienting substrates randomly
c. breaking the laws of thermodynamics d. shutting out water molecules e. physically breaking chemical bonds
One-thousandth of a meter is a
A) yard. B) millimeter (mm). C) micrometer (?m). D) nanometer (nm). E) centimeter (cm).
Fish are considered a nonrenewable resource.
Answer the following statement true (T) or false (F)