The earliest hominin fossils are found in
a. Africa.
b. Asia.
c. Australia.
d. the South Pacific.
e. Europe.
A
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Important sources of contamination in crowded locations are
A. blood. B. droplets of saliva or mucus. C. restrooms. D. kitchens.
All cells have some characteristics in common; both prokaryotic and eukaryotic cells have
A) a nucleus and a cell membrane B) DNA and a cell membrane C) cytoplasm, a plasma membrane, and a nucleus D) cytoplasm, a plasma membrane, and DNA E) a cell membrane and cytoplasm
A compound can rotate about a double bond to interconvert between cis and trans configurations.
a. true b. false
What type of microscopy provides a three-dimensional view of the surface of an object?
A. transmission electron microscope B. scanning electron microscope C. compound light microscope D. phase contrast microscope E. ultraviolet microscope