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Electron Transport Chain & Oxidative Phosphorylation PowerPoint Notes
Where does ETC happen? _____________
Remember that Glycolysis happens in the ________________ outside the mitochondria and the Krebs
cycle happens in _____________ inside the mitochondria.
Electron Transport Chain (ETC):
__________________ is where the H+
are pumped

All along the intermembrane are folds
called cristae. These are where the
____________ __________proteins
reside.

The ________ is where NADH, FADH2,
H+, O2, & converted ADP are converted
NAD+, FAD, water & ATP.

to
High-energy _______________ from _________ and _________ are passed along the ETC. Energy from passing
electrons is used to transport ___________across the cristae. The pumping of H+ ions into the ________________
represents potential energy that is harnessed to make ATP. As H+ ions escape through ion channels back into the
matrix, _________________ spins and adds a phosphate to ADP to form ____________.
__________ serves as the final electron acceptor of the electron transport chain. These electrons are at their lowest
energy level. At the end of the electron transport chain, an enzyme combines the electrons with the hydrogen ions
and oxygen to form ___________. For every two high energy electrons one _____ is transported to the
intermembrane space of the mitochondria. High-energy electrons from ________ come in at beginning but electrons
from _________ come in farther down the chain.
Electron Transport Chain & Oxidative Phosphorylation PowerPoint Notes
So if two high energy electrons produce 1 ATP then NADH produces ____ ATP and FADH2 produces ____ ATP.
SO ATP Totals:
Glycolysis which happens in the _______________, breaks down ______ into ______; which produces a
total of ____ ATP & ____ NADH.
Krebs Cycle which happens in the _________________, breaks down _________ into __________;
which produce a total of ___ ATP, ___ CO2, ___NADH, & ___ FADH2.
Electron Transport which happens in the _____________, uses high energy electrons and H+ ions
donated by _____ and _____ to make a net of ____ ATP. Oxygen act as the final electron acceptor to
produce _____.
Cellular Respiration (aerobic, with oxygen) produces _______ ATP per glucose, whereas Fermentation
(anaerobic, without oxygen produces ________ ATP per glucose.
Exercise and energy (Short Term Energy):
Cells normally contain _________ amounts of ATP produced by _______________ &
__________________________ (only enough for a few seconds of activity) Once this ATP is used
up_____________ fermentation can provide enough ATP to last about ___________________. Once
race is over, _______________ must be broken down using oxygen. Well __________ athletes burn
lactic acid more efficiently.
Exercise and energy (Short Term Energy):
For exercise longer than 90 seconds _____________________ is the only way to make enough ATP.
Cellular respiration releases energy _____________ than fermentation. Well-conditioned athletes must
pace themselves during a long race. For exercise longer than 90 seconds__________________ is the
only way to make enough ATP. Cellular respiration releases energy _____________ than fermentation.
Well-conditioned athletes must pace themselves during a long race.
All Cells Need Energy:
All __________________ (including plant and animal cells) have _______________ for cellular
respiration. All __________________ (bacteria) have their electron transport enzymes attached to their
_____________________.