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. CELLULAR RESPIRATION
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Page 134 CELLULAR RESPIRATION REACTION OXIDATION = lose electrons or hydrogen ions REDUCTION = gain electrons or hydrogen ions “LEO says GER”
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Fig. 8.2
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Fig. 8.6
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Page 136
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GLYCOLYSIS – the conversion of glucose to pyruvate takes place in the cytoplasm does not require oxygen (anaerobic) glucose is a stable molecule so it must be activated by ATP ATP adds 2 phosphate molecules (phosphorylation) which causes the glucose molecule to break into 2 2 pyruvate molecules are the result if oxygen is not present, pyruvate will accumulate and lactate (lactic acid) will be formed in animals, releasing another ATP (X2) = fermentation = muscle cramps Don’t forget with yeasts we get ethanol = alcoholic drinks, sauerkraut, bread rising……
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Fig. 8.5
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Page 138
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http://www.science.smith.edu/departments/Biology/Bio231/glycol ysis.html (animation of glycolysis) http://www.mcgrawhill.ca/school/applets/abbio/quiz/ch05/how_gl ycolysis_works.swf (McGraw-Hill animation of glycolysis) http://www.sumanasinc.com/webcontent/animations/content/cellul arrespiration.html (Sumanas – The Big Picture)
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When oxygen is present, cellular respiration continues in the mitochondrial matrix with the Kreb Cycle Prep
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Page 140
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Next step: Kreb Cycle (Citric acid Cycle)
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Page 141
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Fig. 8.7
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Next step = electron transport chain (electron transport system) and chemiosmosis
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Fig. 8.8
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Fig. 8.9
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Page 142
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Fig. 8.10
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Fig. 8.11
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Page 146
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http://www.science.smith.edu/departments/Biology/Bio231/glycolysis.html (animation of glycolysis) http://www.mcgrawhill.ca/school/applets/abbio/quiz/ch05/how_glycolysis_works.swf (McGraw-Hill animation of glycolysis) http://www.johnkyrk.com/krebs.html (complicated molecular view of Krebs cycle) http://www.mcgrawhill.ca/school/applets/abbio/quiz/ch05/how_the_krebs_cycle_wor.swf (McGraw-Hill animation of Krebs cycle) http://www.youtube.com/watch?v=-_8aYKcQZ_Q&feature=related (Krebs cycle animation) http://www.science.smith.edu/departments/Biology/Bio231/etc.html (step-by-step of electron transport system – ETS) http://www.youtube.com/watch?v=1engJR_XWVU&feature=related (Electron Transport System) http://www.mcgrawhill.ca/school/applets/abbio/ch05/electrontrans_electron.swf (McGraw-Hill animation of ETS/chemiosmosis) http://scholar.hw.ac.uk/site/biology/activity3.asp (excellent step-by-step overview of cellular respiration) http://www.science-groove.org/Now/Come.html (electron transport chain song) CELLULAR RESPIRATION ANIMATIONS
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Fig. 8.12
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Page 149
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