MGY377H1 Midterm: Study notes for midterm
Document Summary
Metabolism is all the biochemical reactions that occur in a cell. Involves catabolism energy produced, break down, oxidation. And anabolism biosynthesis, energy used, reductant required. In biological systems, energy conservation involves oxidation-reduction reactions (redox) A redox reaction must have an electron donor and an electron acceptor. Oxidation is removal of electrons substance becomes more positive. Reduction is addition of electrons substance becomes more negative: oil rig. Reductant/reducing agent: substance that reduces another substance, is itself oxidized in process, losing electrons. Oxidant/oxidizing agent: substance that oxidizes another substance, is itself reduced in the process, gaining electrons. Tendency of substance to become oxidized or reduced. 6co2/c6h12o6: oxidized form is on left, reduced form on right, reduced substance of redox couple with lowest or most negative reduction potential donates electrons to oxidized substance of the other redox couple. In catabolim, electron donor referred to as energy source. Amount of energy released depends on energy donor and acceptor: how far they fall down.