BIOL130 Study Guide - Midterm Guide: Ketose, Activation Energy, Cell Nucleus
5 Sep 2013
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Chapter 1 a preview of a cell. Cell theory: all organisms consist of one or more cells; the cell is the basic unit of structure for all organisms; all cells arise only from preexisting cells. Electron microscope designs: transmission electron microscope (tem) Black and white sketched images and scanning electron microscope (sem) Prokaryote: no nucleus, single celled organism, cell wall. Eukaryote: true nucleus, multicelled organism, cell wall depends. Cytoplasm: everything between plasma membrane and nuclear membrane, includes all membrane bound organelles. Rough er: wrapped around nucleus, studded with ribosomes, takes rna transcripts, proteins for export. Smooth er: synthesize lipids and steroids, metabolize carbohydrates and steroids (but not lipids), and regulate calcium concentration, drug metabolism and attachment of receptors on cell membrane proteins. Lysosomes: cell stomachs , enzymes to digest four macromolecules/worn out organelles, material brought into cell by phagocytosis. Mitochondria and chloroplasts contain dna for some of their own proteins, both have double layers of membranes.
