Archaea and Bacteria are most similar in terms of their___________.
A. genetics
B. cell wall structure
C. ecology
D. unicellular structure
Ans: D. unicellular structure
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The molecules used as molecular scissors in genetic engineering are
A. exonucleases. B. proteases. C. restriction enzymes. D. RNA polymerases.
Cartilage injuries do not repair themselves because ________. a. All of these choices are reasons cartilage injuries do not repair themselves
b. cartilage does not receive nutrients very easily c. cartilage does not contain blood vessels d. None of these are reasons as cartilage does heal itself. e. cartilage does not divide in adults
The coastal forests of Eastern Africa is home
to many endemic species and many of those species are either threatened or endangered. Because of this the coastal forests of Eastern Africa have been designated by Conservation International as a conservation __.
a. hot spot b. endangered region c. national park d. island e. ecoregion
Allopatric speciation requires ____.
A. accelerated gene flow B. physical separation C. physical diversity D. behavioral diversity E. sexual selection