BIOL 153 Midterm: Biology 153 October Midterm Review Package.docx
Document Summary
Most cells are small, depend on external energy sources, selectively regulate exchange of material with their environments and use information in their dna to regulate their chemistry. There are many examples where an entire plant can be produced from only a small part of a plant nucleus. Organelles can be sustained in culture but none can reproduce an entire cell, not even the. There is tremendous diversity in diameter, length and shape of different cells. It binds with the phospholipid head and stabilizes the outer portion of the membrane. Proteins are incorporated into the membrane in the following ways: extrinsic or peripheral proteins are attached to either the external or internal surface of the membrane. Intrinsic or integral proteins project through both surfaces (span the bilayer). There is also a strong scientific evidence suggesting that in certain types of cancer some abnormality of glycocalyx leads to uncontrolled proliferation of such cells.
