Photosynthetic Organisms Using Thoxygen-Releasing Pathway Appeareon Earth About __________ Billion
Photosynthetic organisms using thoxygen-releasing pathway appeareon earth about __________ billion years ago.
A) 1.3
B) 1.8
C) 2.3
D) 2.7
E) 3.8
Correct Answer:
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Q17: Thfirst life-relateancarbon-basemoleculwas synthesizein vitro by a German
Q18: Thearth another planets of thsolar systewerformeabout _
Q19: Malaria is likely to bendemic in
A)Russia.
B)North China.
C)Gabon.
D)Belgium.
E)New
Q20: Microorganisms may possibly adapt to which of
Q21: Thfirst organisms
A)had to be autotrophic.
B)were parasitic.
C)obtained energy
Q23: Two researchers suggestein th1960s that _ may
Q24: Clay compounds werthought to boriginal sites for
Q25: Experiments likthosperformeby Stanley Miller in th1850s demonstrated
A)that
Q26: Thfirst organisms
A)absorbed their food supplies from the
Q27: Increasin thpopulation of photosynthetic bacteria using thoxygen-releasing
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