Biology 3rd Edition by Peter Russell, Paul Hertz, Beverly McMillan

تمرين 8

For the transition of protocells to living cells, which of the following probably had to occur?
A)DNA had to code for cell membranes.
B)Proteins had to be aggregated by RNA.
C)Ribozymes had to adsorb onto clays.
D)H₂ O, which is essential for the chemistry of all biological systems, had to become available to cells via metabolism and dehydration synthesis.
E)Informational molecules, such as ribozymes, had to evolve.