BIO 311C Lecture Notes - Lecture 8: Transmission Electron Microscopy, Membrane Transport, Lipid Bilayer
Document Summary
Reductionism: reduces complex systems to simpler components that are more manageable to study. Magni cation: the ratio of an object"s image size to its real size. Resolution: the measure of the clarity of the image or the minimum distance btwn two points. Contrast: visible di erences in parts of the sample of the background, di erences in brightness between the light and dark areas of an image. By using more lenses, microscopes can increase magni cation but doesnt always mean that more detail can be seen Amnt. of detail depends on the resolving power of a microscope, which is the smallest separation at which two separate objects can be distinguished (or resolved) shorter wavelength of light improves resolving power (blue light) Phospholipid: the primary molecular structure of the cell"s boundary makes a permeability barrier btwn aqueous regions, a matrix for functional proteins. Cholesterol: reinforcement of phospholipid bilayer, facilitates uidity at both high and low temperatures.
