Thearliest animals appeareabout __________ years ago.
A) 2,700,000,000
B) 570,000,000
C) 36,000,000,000
D) 750,000,000
E) 15,000,000
Correct Answer:
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Q36: _ ardome-shapestructures composeof layers of early cells
Q37: Which of thfollowing statements may apply to
Q38: Stromatolites appeareabout _ years ago.
A)6,000
B)1,000,000
C)250,000,000,000
D)3,500,000,000
E)50,000,000,000
Q39: Therarseveral evidences that RNA may have
A)carried genetic
Q40: Thprimitivtemplatthat was thought to busefor forming chains
Q42: Which of thfollowing eukaryotic organelles arbelieveto havexisteas
Q44: Thfirst eukaryotic cells may havbeen
A)bacteria.
B)archaea.
C)protists.
D)algae.
E)fungi.
Q45: Which of thfollowing organisms sharespacwith thfirst animals?
A)bacteria
B)archaeans
C)fungi
D)protists
E)all
Q46: Prokaryotic cells may
A)feed on animals and plants.
B)make
Q79: A coccus
A) is a rod-shaped bacterium.
B) is
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