BIO 202 Chapter Notes - Chapter 9: Enolase, Succinic Acid, Flavin Mononucleotide
6 Apr 2017
School
Department
Course
Professor
Document Summary
Catabolic pathway: metabolic pathway that releases stored energy by breaking down complex molecules i. e. fer(cid:373)e(cid:374)tatio(cid:374) partial degradatio(cid:374) of orga(cid:374)i(cid:272) fuels (cid:449)ithout o(cid:454)(cid:455)ge(cid:374) Aerobic respiration is most efficient catabolic pathway; oxygen is consumed as a reactant along with the organic fuel. Linked to work by a chemical drive shaft (atp) Cellular respiration includes both aerobic and anaerobic respiration but is synonymous to aerobic, since animals breath in oxygen (organic compounds) + (o2(cid:895) (cid:894)co2) + (h2o) + (energy) Relocation of electrons release energy, which is used to synthesize atp. Hydrogen atoms stripped from glucose are first passed to nad+ before transferring to o2. Nad+ prefera(cid:271)le ele(cid:272)tro(cid:374) (cid:272)arrier (cid:271)(cid:272) it (cid:272)a(cid:374) easil(cid:455) (cid:272)(cid:455)(cid:272)le (cid:271)t(cid:449)(cid:374) o(cid:454)idized a(cid:374)d redu(cid:272)ed. Dehydrogenases removed a pair of hydrogen atoms (2 electrons, 2 protons) from the substrate and then delivers the atoms (2 electrons, 1 proton) to nad+; leftover proton is released into the surrounding solution.
