NRSG 485 - FINAL EXAM STUDY GUIDE.

NRSG 485 - FINAL EXAM STUDY GUIDE/NRSG 485 - FINAL EXAM STUDY GUIDE. Alterations of Cellular Function Cell Injury, Genetic Principles, Oncogenesis and Stress Describe the cell (plasma) membrane and the role of membrane proteins o The membrane is semi-permeable and lets small, uncharged molecules pass through. Ions and large molcules cannot pass. It is a lipid bilayer with a hydrophilic exterior and hydrophobic interior. Membrane proteins act as receptors, enzymes, cell-cell interaction, and transporters. o Cell (plasma) Membrane: serves as a semi-permeable barrier between ICF and ECF 1. Composition (Fig. 1-6) a) Lipid Bilayer: hydrophilic polar head groups (outward) and hydrophobic fatty acid chains (inward) o (1) Permeable to water