Beta- carotene is converted to vitamin ___ in

the cells of the small intestine.



a. B12
b. A
c. E
d. C
e. D


B

Biology & Microbiology

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The separate feeding locations of these five warbler species on different portions of the same tree illustrates:

A. biotic transformation. B. competitive exclusion. C. resource partitioning. D. top-down population regulation.

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Phylum Chordata includes two clades of invertebrates. Which of the following is an example of a chordate invertebrate?

a. sea slugs b. brittle stars c. lancelets d. moray eels

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A(n) ________ is a global outbreak of disease

Fill in the blank(s) with correct word

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Which of the following is the most difficult to inactivate?

A. enveloped viruses B. fungus spores C. bacterial endospores D. nonenveloped viruses E. protozoan cysts

Biology & Microbiology