BIO 101 Lecture Notes - Lecture 10: Lysosome, Vacuole, Nucleoplasm
Document Summary
Animal cell: plasma membrane, phospholipid bilayer (hydrophilic/polar head, hydrophobic/nonpolar tail) with proteins (integral [stretches across the bilayer] protein membranes, peripheral [only exist on one side of the bilayer] protein membranes) integral protein membranes: can be transporters, good example of the importance of the structure function relationship in proteins peripheral protein membranes: some function examples include: for external: recognition or attachment and for internal: signaling and enzymatic activity, semipermeable (differentially permeable) Components of the membrane can move laterally because they are in fluid (cytoplasm vs. interstitial fluid) Components of membrane cannot flip across the hydrophobic center because the fatty acids and hydrophobic components of the membrane cannot be exposed to water (cytoplasm and the interstitial space: nucleus, organelle that houses the genetic material, humans: genetic material (dna [in the form of chromosomes]) is condensed into chromatin in order to fit into the nucleus.
