All cells must perform certain tasks. The cytoplasm must be separated from its environment so appropriate internal conditions can be maintained. The cell must take in raw materials and expel wastes through the barrier that separates it from its environment. It must take in energy and convert it to a form useful for powering the cellular machinery. E. It must coordinate and regulate its activities.
All eukaryotic cells have certain structures.
The membrane includes proteins that stabilize the lipid bilayer and acts as gates, pumps, markers, or signal receptors. The genetic information passes from DNA to RNA to proteins, which carry out the work of the cell. Each pore is a cluster of proteins that form a channel. Lysosomes contain digestive enzymes that break down ingested food or, if broken open, digest the cellu- lar components. F. Plastids harvest solar energy and produce and store food.