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123123456 123123456
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6 years ago
The two tenets of natural selection are (select all that apply):
 
  A. sexual reproduction in a population.
  B. variation in a population.
  C. competition in a population.
  D. increasing number of members in a population.



The three main groups of known organisms include (select all that apply):
 
  A. Bacteria.
  B. Archaea.
  C. Eukaryotes.
  D. Fungi.
  E. Prokaryotes.



Scientists currently theorize that:
 
  A. it is possible to synthesize a simple cell similar to LUCA.
  B. cells from the Archaea group are most similar to LUCA.
  C. cells from the Bacteria group can be mutated so they revert to LUCA.
  D. evolution created LUCA from the Archaea group.



LUCA, the last universal common ancestor, is:
 
  A. a prehistoric protozoan cell.
  B. an embryonic cell (in fetus).
  C. the simplest bacterial cell.
  D. a cell from which all organisms descended.



When a cell acquires a new function, it usually has acquired:
 
  A. additional nutrients.
  B. additional energy.
  C. additional volume.
  D. a new enzyme.
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b3kglennsb3kglenns
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6 years ago
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123123456 Author
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6 years ago
Thank you, thank you, thank you!
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Yesterday
Helped a lot
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2 hours ago
Thanks for your help!!
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