Two researchers suggestein th1960s that __________ may havbeen thfirst informational molecule.
A) DNA
B) a protein
C) RNA
D) a saccharide
E) a peptide
Correct Answer:
Verified
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
Q22: Photosynthetic organisms using thoxygen-releasing pathway appeareon earth
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
Q28: Which of thfollowing scientists suggestethat RNA may
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