Endoplasmic Reticulum - a network of membranous tubules within the cytoplasm of a eukaryotic cell.
The endoplasmic reticulums function is the folding of protein molecules in sacs called cisternae and the transport of synthesized proteins in vesicles to the Golgi apparatus. The endoplasmic reticulum looks like folded paper, made up of membranes that are folded into one another to provide more surface area for cell use.Membranes that make up the rough endoplasmic reticulum are made up of lipids, like the membrane that wraps around the whole cell.The surface of rough endoplasmic reticulum is dotted with other organelles known as ribosomes. Golgi Apparatus - a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells. The golgi apparatus function sorts and packages proteins for secretion it also involves the transport of lipids around the cell, and the creation of lysosomes. The golgi apparatus looks like a maze, but the structure is made up of stacks of flattened membranous sacs, or cisternae. Lysosome - an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane. The lysosome function digests excess or worn-out organelles, food particles, and engulfed viruses or bacteria. The lysosome has a membrane bounded sac that buds from the golgi apparatus and contains many enzymes. Mitochondria - the biochemical processes of respiration and energy production. “power house” Mitochondria’s function is to convert energy into forms that are usable by the cell. Mitochondria looks like a rod-shaped structure that is enclosed within two membranes - the outer membrane and the inner membrane. The membranes are made up of phospholipids and proteins. |