Use Equations (17.10) and (18.3) to calculate the emf values of the Daniell cell at 25C and 80C. Comment on your results. What assumptions are used in the derivation? (Hint: You need the thermodynamic data in Appendix 3.)
Chapter 4 4.1 Cellular Level of Organization • Detailed study of the cell in the 1830s • A unifying concept in biology • Originated from the work of biologists in 1838–1839 • Cel All organisms are composed of cells. All cells come only from preexisting cells because cells are self-reproducing. Cells are the basic units of structure and function in organisms. Cell size • Cells range in size from one millimeter (mm) down to one micrometer (μm) in diameter. • Cells need a large surface area of plasma membrane to adequately exchange materials. • The surface-area-to-volume ratio requires that cells be small. Large cells – surface area relative to volume decreases which also decreases the efficiency of transporting materials in and out of the cell Small cells – larger surface-area-to-volume ratio is advantageous for exchanging molecules Microscopy Today: Compound Light Microscope • Light is passed through the specimen. • Then it is focused by a series of glass lenses. • It forms an image on the human retina. • The maximum magnification is about 1000X. • The compound light microscope resolves objects separated by 0.2 mm, 500X better than human eye. Assuming the resolving power of the human eye is 1.0 Microscopy Today: Transmission Electron Microscope • Abbreviated T.E.M. • Electrons are passed through specimen and then they are focused by a set of magnetic lenses. • An image is forme
