BIO 1140 Lecture : Biology 1140 Lecture Notes.docx
23 Feb 2014
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Schwann (zoologist) and schleiden (botanist: all cells arise only from pre-existing cells (i. e. the cell is the basic unit of reproduction. Proteins, same collection of 20 or so amino acids. Dna is pretty much the same, in terms of basic chemistry. Metabolism, energy transfer, uses common currency across all cell types in the form of atp: muscle cells are a good choice to study atp, to work on chloroplasts, use plants. Internal organelles do not affect the surface to volume ratio. They way molecules move around the cell is by diffusion. You can overcome this with respect to sa:v ratio, large organism made up of many small cells. To overcome this problem, contain reaction in a smaller space, such as organelles in mitochondria. One of the way these cells become large, by breaking up interior into compartments: transport systems, can move solutes around, without relying on diffusion, another reason they can become bigger than prokaryotes, four groups to look at:
