Cellular Respiration Flashcards
Cellular Respiration
process of breaking down glucose to make ATP using substrate level and oxidative phosphorylation
glycolysis
first process in cellular respiration, uses glucose as (preferred) substrate to net 2 ATP, 2 NADH, 2 pyruvate
pyruvate oxidation
the process in which 2 pyruvates from glycolysis are transported into the mitochondria, this also converts them into 2 acetyl-CoA
citric acid cycle
2 acetyl-CoA are oxidized to CO2, which nets 2 ATP, 6 NADH, and 2 FADH2
mitochondrial ETC
high energy electrons from the previous three processes are used to create an h+ gradient across the inner mitochondrial membrane(H+ pumped into intermembrane space)
chemiosmosis
process in which from of H+ back across the inner membrane power the production of ATP via ATP Synthase
oxidative phosphorylation
the function of ETC combined with chemiosmosis, named as such because of importance of oxygen as final electron acceptor
fermentation
regenerates NAD+ to keep glycolysis going so that ATP can be produced with limited oxygen
alternate substrates
other organic molecules (sucrose, fructose, etc.) can be used for respiration if glucose is unavailable
Amino Acids (alt. sub.)
can be converted into glucose, acetyl-CoA, or intermediates of citric acid cycle after deamination
Tryglycerides (alt. sub.)
can be split into glycogen, from there it can be converted into G3P for glycolysis and into fatty acids, which can be used to make acetyl-CoA, NADH, FADH2 via bet-oxidation