Mitochondria: an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It breaks down waste and releases energy. Ribosomes: Makes Protein Ribosomes Make protein Golgi Bodies: a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells This Endoplasmic Reticuluma: network of membranous tubules within the cytoplasm of a Eukaryota cell, continuous with the nuclear membrane. This Is what the Endoplasmic Reticulum look like Nucleus: a dense organelle present in most Eukaryota cells, typically a single rounded structure bounded by a double membrane, containing the genetic material. This is where the nucleus is and what it looks like Nucleus Membrane: The nuclear membrane consists of two lipid bi-layers—the inner nuclear membrane, and the outer nuclear membrane.