BIO 2600 Study Guide - Membrane Transport Protein, Cell Membrane, Nuclear Membrane
Document Summary
Relative volumes and numbers of membrane-enclosed organelles: more organelles than plasma membrane because many of them have folding properties, 20-30 x greater in the. No because organelles are made for specific functions and so the organelle probably contains different types of proteins and order of phospholipids ex. Pancreatic tissue and liver tissue differ: organelles can be anchored to a location based on its interaction with the cytoskeleton. They can also move around the cell via attachment to motor proteins. Nuclear membranes and the er may have evolved through invagination of the plasma membrane: ancient prok. Cell, genetic material associated to membrane: membrane actually fold in on itself (invaginates) and forms the two-layer envelope of the membrane, all membrane bound organelles except the mitochondria and nuclear envelope were probably made through invagination. Mitochondria are thought to have originated when a prokaryote was engulfed by a larger.
