BI226 Lecture Notes - Lecture 10: Covalent Bond, Cell Membrane, Extracellular Fluid
Document Summary
Composition ~ glycoproteins and fibrous proteins such as collagen. May be connected to cytoplasm via integrin proteins in plasma membrane. Plasmodesmata are channels that perforate plant cell walls. Tight junctions, membranes of neighbouring cells are pressed together preventing leakage of extracellular fluid. Desomsomes fasten cells together into strong sheets. Gap junctions provide cytoplasmic channels between adjacent cells. Lecture 2 intro to chemical compounds: chemical bonds. Involves the transfer of an electron from one element to another. One element becomes positive, one becomes negative. Sharing of electrons to make a molecule.
