___ are geographical areas that contain high numbers of endemic species.
a) Biodiversity hotspots
b) Wildlife preserves
c) Buffer zones
d) Biomes
Ans: a) Biodiversity hotspots
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The prevalance of iron-sulfide cofactors in organisms supports the hypothesis that life arose _____
a. in outer space b. on tidal flats c. in volcanic springs d. in the upper atmosphere e. near geothermal vents
_____ is a technique to determine the order of nucleotide bases in a fragment of DNA
Fill in the blank(s) with correct word
All organisms in domain ____ are single-celled
a. Protists b. Fungi c. Plants d. Bacteria e. Eukarya
Leucine zipper proteins regulate transcription by:
a. forming dimers with zinc finger transcription factors. b. changing the chromatin structure to heterochromatin c. blocking DNA regulatory elements. d. binding to and activating DNA regulatory elements such as enhancers and silencers. e. degrading RNA polymerase.