BIO 1030 Lecture 14: BIO 1030 Lecture 14

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BIO 1030: Lecture 14
Notes
Exam next Wednesday
Cellular respiration
o Produces ATP
o Requires oxygen and glucose
o Produces carbon dioxide and water
Reason why we breathe
o Essentially the reverse of photosynthesis
Oxidation
o Removal of hydrogen atoms
Hydrogens removed from glucose
Gives waste product carbon dioxide
Reductions
o Addition of hydrogen atoms
Oxygen accepts hydrogens
Become waste product water
Phases of complete glucose breakdown
o Glucose broken down slowly in steps
o Allows energy to be captured and used to make ATP
o Coenzymes join with hydrogen
NAD^+ NADH
FAD^+FADH_2
4 phases of complete glucose breakdown
o Glycolysis
o Citric acid cycle
o Electron transport chain
o Preparatory reaction
Glycolysis
o First step in cellular respiration
o In eukaryotes, it takes place in the cytoplasm
o Glucose broken down into two molecules of pyruvate
o Divided into
Energy-investment steps
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