9. The initial importance of a membrane enclosing self-replicating RNA molecules and associated proteins was that a membrane -A) maintained these molecules as a unit capable of reproduction and evolution. B) provided sites for proteins to function. C) transported materials in and out of the compartment. D) kept other molecules out of the compartment. 10. Eukaryotic cell nuclei contain genes that are A) primarily of eukaryotic origin. B) primarily of archaebacterial origin.