Individual atoms on the surface of prepared samples can be observed by using the
A. phase contrast microscope.
B. scanning electron microscope.
C. dark-field microscope.
D. atomic force microscope.
D
Biology & Microbiology
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Which species might experience reproductive isolation if all bees in the area were eliminated by disease?
a. brown bats b. coffee ferns c. almond trees d. dragonflies
Biology & Microbiology
Sphaerotilus and Leptothrix are examples of
A. purple sulfur bacteria. B. Enterobacteriaceae. C. sheathed bacteria. D. green nonsulfur bacteria.
Biology & Microbiology
Compared to a solution of pH 9, a solution of pH 7
A. has more H+ ions. B. has a higher pH. C. is more basic. D. has no OH- ions.
Biology & Microbiology
In the accompanying figure, a cell type that distributes breakdown products of digestion to other cells in the sponge
body is identified by the number ____. a. 1 b. 2 c. 3 d. 4 e. 5
Biology & Microbiology