【正文】
e side or the other of the membrane, or even be permanently built into the bilayer, while other proteins span the bilayer and may form transport channels through the membrane.,第九頁,共十五頁。ng):,a) 控制細胞內(nèi)外物質(zhì)(營養(yǎng)物質(zhì)和代謝廢物)的運送、交換; b) 維持細胞內(nèi)正常滲透壓的滲透屏障作用; c) 合成(h233。,Table 6. Functions of the procaryotic plasma membrane. 1. Osmotic or permeability barrier 2. Location of transport systems for specific solutes (nutrients and ions) 3. Energy generating functions, involving respiratory and photosynthetic electron transport systems, establishment of proton motive force, and transmembranous, ATPsynthesizing ATPase 4. Synthesis of membrane lipids (including lipopolysaccharide in Gramnegative cells) 5. Synthesis of murein (