What characteristic distinguishes nucleic acids from proteins making them better candidates to have been the hereditary molecule in the first protocells?     A single molecule contains the information needed to make a duplicate copy.     They are complex enough to carry instructions to build a cell.     They have catalytic activity.     They can compartmentalize.     Their monomers form abiotically.

Which of the following is most different between the Three Domains of Life? The function of ribosomes The function of the cell membrane(s) -I tried this and it was incorrect The structure of flagella The use of cysteine in proteins

Do question 5

The "RNA world hypothesis"... maintains that RNA originally served as the main energy source of cells and gradually evolved to have a genetic function. Ospeculates there was a time in earth's history when RNA served both as rudimentary genetic material and the primary catalyst of life. Ohypothesizes that RNA viruses were the first life forms and later evolved into DNA based microbes assumes RNA was a key ingredient in the first primitive membranes that formed protobionts. Later, it migrated inside of "proto-cells" and took on a hereditary function. has largely been discredited by most researchers studying the origins of life on earth. It is now widely believed that DNA preceded RNA.