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
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The fatty substance that protects the axon is __________ .
Fill in the blank(s) with the appropriate word(s).
The study of hantaviruses requires biosafety level (BSL) 4 precautions
Indicate whether the statement is true or false.
________ "tag" misfolded proteins so that they can be refolded or sent to proteasomes.
A) Chaperones B) Folding catalysts C) Signal sequences D) Ubiquitin molecules
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.