Multiple Choice
Ribosomes can catalyze formation of peptide bonds. This supports the hypothesis that ____.
A) an RNA world preceded DNA-based genomes
B) RNA can hold more information than DNA
C) the first protists had RNA as their genetic material
D) RNA's only role is that of an enzyme
E) protocells contained DNA
Correct Answer:
Verified
Correct Answer:
Verified
Q4: Oxygen released by _ accumulated in early
Q5: A protocell is capable of self-replication.
Q6: Which organism arose first?<br>A)archaea<br>B)animals<br>C)fungi<br>D)plants<br>E)protists
Q7: Cyanobacteria are ultimately responsible for the ozone
Q8: Metabolism may have begun when _ within
Q10: All species on Earth today are descended
Q11: Who demonstrated the possibility of producing organic
Q12: Astrobiologists study Earth's _ to find clues
Q13: What compound served to contain interacting organic
Q14: What step occurred first in the evolution