The impact of a large asteroid comet with Earth has been proposed to have caused the extinction of the dinosaurs. The impact site of this comet is in or near

a. Iowa.
b. Hudson Bay.
c. Crater Lake, Oregon.
d. Canberra, Australia.
e. Chicxulub, Mexico.


e

Biology & Microbiology

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than any other plant.

a. wheat b. corn c. rice d. potatoes e. legumes

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Both symport and antiport require transport proteins.

a. true b. false

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Pleomorphic bacteria

A) have a slightly curved rod shape. B) are flexible spirals. C) are both bacillus and coccobacillus in shape. D) are roughly spherical. E) vary in size and shape.

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The International Committee on Taxonomy of Viruses has determined that there are only three orders of viruses.

Answer the following statement true (T) or false (F)

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