If you were to combine all of the ecosystems on the planet, you would obtain the ________.

A. troposphere
B. envirosphere
C. biosphere
D. ionosphere


Answer: C

Biology & Microbiology

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Alkaline phosphatase is an enzyme used in ________ tests.

A. ELISA B. indirect fluorescent antibody C. Western blot D. direct fluorescent antibody

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Biological species consist of groups of ________

A) populations B) domains C) families D) genera

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Most plants appear green because chlorophyll

a) does not absorb green light. b) reflects violet light. c) absorbs green light. d) none of the above.

Biology & Microbiology

Folding of the 5' end of a mRNA, such that binding to the ribosome is altered, is most likely to affect

A. transcription. B. replication. C. translation. D. transformation.

Biology & Microbiology