The Membrane System of the Cell Membranes consist of a double layer of phospholipids in which proteins are embedded. The cell's membrane system includes the plasma membrane, endoplasmic reticulum, the Golgi complex, and lysosomes. Mitochondria produce ATP using energy stored in food molecules. Storage and Elimination Many types of plastids store food in plants. Helicobacter pylori Intermediate filaments provide a supportive framework.
Microtubules help position, anchor, and move organelles and alter the shapes of cells.
The mitotic spindle is the structure responsible for the segregation of chomosomes at mitosis. Xenopus XL-177 cells. Images by Claire Walczak . This image shows the localization of microtubules and DNA in a mitotic spindle assembled in vitro in a cytoplasmic extract from Xenopus laeviseggs. Image by Claire Walczak.