The next steps are to build these highly complex molecular structures into systems like: chloroplasts, where photosynthesis takes place for changing light into chemical potential energy; mitochondria, for generating chemical potential energy from food; and the sophisticated DNA – RNA system for storing and replicating inheritable information.
Membranes allow the rapid development of complexity, and also the formation of structures that are going to carry out the functions that allow life to develop, grow and reproduce. Cellular structures that are specialized for specific tasks are called organelles. An example of an organelle is the chloroplast.
Once a mechanism for the conversion of light into energy was established growth could be sustained, this also had the side-effect of producing abundant dissolved oxygen. This would be highly significant once gravity was activated and an atmosphere began to form.