HLSC 2110U Lecture 4: Study Notes - Lecture 4
2 Feb 2019
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Document Summary
Bioenergetics: cellular energy monitoring; describes the generation, transfer, and utilization in biologic systems. Energy is produced in the cell with many coordinated chemical pathways. Pathways are combos of oxidation and reduction reactions. Oxidizing a molecule involves removing an electron and results in a decrease in potential energy of the oxidized compound. Electron does not remain free but is shifted to another compound, reducing that compound. Shift of electron transfers potential energy from oxidized compound to the reduced compound. Most energy is stored in atoms and used to fuel cell functions. The energy transfer by electron allows the cell to use energy in a controlled way. Bind and carry high-energy electrons between compounds in pathways. Principal electron carriers are derived from the b vitamin group and nucleotides. Nad+ can accept electrons from an organic molecule. Rh (reducing agent) + nad+ (oxidizing agent) nadh (reduced) + r (oxidized) Electrons are added to a compound, it is reduced.
