Biol-M 200 1st Edition Lecture 5 Outline of Last Lecture I. Cell StructureOutline of Current Lecture II. Growth and Metabolism ICurrent LectureMetabolism (Sum of all chemical reactions in a cell)- Catabolismo Reactions that breakdown larger molecules into smaller molecules and energy.- Anabolismo Reactions that assemble small molecules into larger molecules and biomass.Metabolic Classes- Three prefixes preceding “troph”o Energy source: chemo-troph and photo-tropho Electron source: organo-troph and litho-tropho Carbon source: hetero-troph and auto-trophGlucose catabolism- First step: Glycolysis- Second step: Respiration (Krebs cycle, electron transport chain) or Fermentation- Electron Transport Chaino The NADH is sent to the cell membraneo Sent to the membrane as NADH and leaving NAD+o Proteins want to get back in the cell (this creates the proton motive force- high amount of potential energy)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Growth= population growth- Bacteria do “grow” (increase in size) but growth almost always refers to population growth and increase in cell number.- Symmetric division: one bacterium (mother) becomes two identical bacteria (daughters) - Generation Time: time required for cell population to double.- Exponential growth: the time between generations is the same (cells double at the samerate)o Time between generations will always be the same for THAT
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