Exam 2 - Aerobic Respiration Flashcards
final electron acceptor in cellular respiration
O2
composition of mitochondria
outer membrane
inner membrane space
cristae (inner membrane)
matrix (innermost compartment)
what is the point of cristae
to increase SA to accommodate ETC proteins
where does pyruvate oxidation occur
in the mitochondrial matrix
what happens in pyruvate oxidation
pyruvate is converted to acetyl coenzyme A by proteins in the pyruvate dehydrogenase complex
one of the carbons from pyruvate is removed in the process as CO2
this process also forms NADH
where does the citric acid cycle occur
in the mitochondrial matrix
how does the citric acid cycle start
acetyl CoA is joined with oxaloacetate to form citrate
why is the citric acid cycle a cycle
eventually oxaloacetate is formed again to join with acetyl CoA again
where is the electron transport chain
in the inner mitochondrial membrane
what happens in the electron transport chain
electrons are moved through the chain to create a H+ gradient that will be used to rotate ATP synthase and allow for oxidative phosphorylation to produce ATP
sequence of proteins in the electron transport chain
- Complex I
- CoQ
- Complex III
- Cyt c
- Complex IV
- O2
ATP Synthase
flavoproteins
accept e- from NADH and FADH2
iron-sulfur proteins
iron atoms carry e-
iron-sulfur center
cytochromes
contain iron to carry e-
copper containing cytochromes
have iron and copper
keeps O2 bound to pick up e-
