The more pathogenic Staphylococcus species in humans is identified by

a. fermentation of mannitol when growing on mannitol salt agar.
b. incomplete hemolysis of red blood cells.
c. production of leukocidins.
d. both a and c.


Answer: D

Biology & Microbiology

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Indicate whether the statement is true or false.

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a. an isopod b. a barnacle c. a shrimp d. a krill e. more than one of these

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When two frog species, Rana pippins and Rana sylvatica, mate, the offspring die early in embryonic development. This is an example of ___________.

A. Hybrid sterility B. Reduced hybrid fertility C. Mechanical isolation D. Reduced hybrid viability

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Ribosomes bound to some of the membrane invaginations in the endomembrane theory

a. true b. false

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