D2.1.2

• Actin and myosin are the same motor proteins that cause contraction of muscle cells.
• Myosin pulls together actin filaments which then divides the cell.
• Gap junctions are small bridges that can be formed as remnants of the ER that gets trapped in the midbody structure.
• Cytokinesis happens differently in plant and animal cells because plant cells have a cell wall, which makes them more rigid.
• Phragmoplasts carry vesicles from the Golgi apparatus to the new cell plate.
• New membranes of daughter cells are formed by fusion of vesicles that were carried to the equator by phragmoplasts.
• Pectin forms the middle lamella that will link the new cell walls.
• Cytokinesis is the final process in eukaryotic cell division which divides the cytoplasm, organelles and the cellular membrane.
• The cellulose wall of each new cell is laid down by substances, like pectins and others, that are brought in by vesicles and deposited by exocytosis between the two new membranes.
• Plasmodesmata are gap junctions and allow molecules to pass from cell to cell.