Section 2-2: Respiration Flashcards
Respiration starting material and products
sugars form 6CO2 via oxidation
produce 24 e-, carried by NADH to produce ATP
NADH reaction
electron carrier
NAD+ + 2e- + 2H+ forms NADH and H+
NAD+ characteristics
oxidized form
e- poor
low energy
NADH characteristics
reduced form
e- rich
high energy
glycolysis
glucose (C6) to 2x pyruvate (3C)
where does glycolysis occur?
in the cytoplasm
what does glycolysis use and produce?
uses 2 ATP, generates 4 ATP (net yield of 2)
produces 2 NADH
TCA cycle
completely oxidizes 2 pyruvate to form 6CO2
where does pyruvate enter the mitochondria?
the matrix
what does the TCA cycle produce
electron carriers (20 e- per glucose)
8 NADH (16 e-)
2 FADH2 (4 e-)
2 ATP per glucose
electron transport chain
e- transferred through chain to O2 (final acceptor)
H+ role in electron transport chain
translocated across inner membrane via active transport
forms electro-chemical gradient across inner membrane
oxidative phosphorylation
ATP synthase uses H+ gradient to make approx 32 ATP/glucose
where is the electrochemical gradient of H+
the intermembrane space
where does mechanical rotation occur
in the matrix
