BIOL 2P03 Lecture Notes - Lecture 4: Chlorophyll, Starch, Antiporter

• School: Brock University
• Department: Biological Sciences
• Course: BIOL 2P03
• Professor: Mark K Lukewich

Document Summary

In this course we will focus on: glycolysis, pyruvate decarboxylation, the (cid:272)itri(cid:272) a(cid:272)id (cid:272)y(cid:272)le (cid:894)kre(cid:271)(cid:859)s (cid:272)y(cid:272)le(cid:895, the electron transport system, atp synthesis, -oxidation, photosynthesis. This greatly increases the surface area: the inner membrane contains numerous proteins involved in energy production. E. g. glucose-6-phosphate inhibits hexokinase: atp can also inhibit certain enzymes. Energy from pyruvate and nadh are wasted. In animal cells, this process generates lactic acid. In the presence of oxygen, pyruvate is transported into the mitochondrial matrix: freely permeable to outer membrane, uses transporter to get across inner membrane, once inside the mitochondrion, pyruvate is decarboxylated (co2 removed) and. Coenzyme a is added to the remaining acetyl group: generates acetyl-coa, nad+ is reduced to nadh in the process. Increases the speed of the cycle as intermediate molecules do not need to diffuse through the mitochondrial matrix to reach their next target: succinate dehydrogenase is attached to the inner mitochondrial membrane. It generates fadh2 which directly enter the electron transport system.