Hominin fossils indicate that humans and their fossil relatives diverged from apes between 5 million and 8 million years ago in _____.

a. the Near East
b. Europe
c. Asia
d. Africa


Ans: d. Africa

Biology & Microbiology

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The fatty substance that protects the axon is __________ .

Fill in the blank(s) with the appropriate word(s).

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The study of hantaviruses requires biosafety level (BSL) 4 precautions

Indicate whether the statement is true or false.

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________ "tag" misfolded proteins so that they can be refolded or sent to proteasomes.

A) Chaperones B) Folding catalysts C) Signal sequences D) Ubiquitin molecules

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All of the following statements about ferns are correct except

A. ferns flourish in many habitats, but the majority are located in the tropics. B. the sporophyte is a conspicuous generation. C. sori are located on the back or ventral surface of fronds. D. ferns have underground stems called rhizomes. E. the gametophyte is a conspicuous generation.

Biology & Microbiology