Cellular Respiration Flashcards
What is stage 1 of cellular respiration?
glycolysis
Where does glycolysis take place?
the cytoplasm
Does glycolysis need oxygen?
No. It is an anaerobic process
Glycolysis produces a net 2 of what molecules?
ATP , NADH, Pyruvic Acid
What is released in glycolysis?
hydrogen
Where does the Krebs cycle take place?
mitochondrial matrix
Is the Krebs cycle aerobic or anaerobic?
aerobic
What happens to the 2 pyruvates in the Krebs cycle?
Each 3 carbon Pyruvate is converted into a molecule of 2 carbon acetyl-CoA
Where does the NADH come from in the Krebs cycle? How many?
- 2 when Pyruvate is converted into carbon acetyl-CoA
- 6 when carbon acetyl-CoA goes through the citric acid cycle
Where does the CO2 come from in the Krebs cycle?
when Pyruvate is converted into carbon acetyl-CoA, O2 breaks off one carbon ring each
Where does the FADH2 come from in the Krebs cycle? How many?
2 when carbon acetyl-CoA goes through the citric acid cycle
Where does the ATP come from in the Krebs cycle? How many?
2 when carbon acetyl-CoA goes through the citric acid cycle
What two products are released when carbon acetyl-CoA goes through the citric acid cycle
CO2, and Hydrogen
Stage 3 of the cellular respiration is also known as what?
Oxidative Phosphorylation
NADH delivers e-’s to the _____ _______ in the ETC
first protein
-FADH2 delivers e-’s to the _______ ________ in the ETC.
second protein
Each NADH yields about _ ATP’s
3
Each FADH2 yields about _ ATP’s
2
How do the electrons impact the hydrogens as they flow down the ETC?
As electrons flow down the chain they cause Hydrogens to get sucked out of the mitochondrial matrix into the inner membrane space.
What happens to the H+ that is in the inner membrane space?
As the concentration of H+’s build up they are sucked back into the mitochondrial matrix through ATP synthase
How is water made in the ETC?
Oxygen is the final e- acceptor, it bonds with H+ to make water
What happens to water in cellular respiration
it is released
How many ATPs does the ETC produce?
32-34 ATP’s
Define fermentation
anaerobic ATP production that occurs after glycolosis when oxygen is not available. (not efficient , 2 ATP’s)
Descibe Lactic Acid Fermentation
produces 2 ATP’s and lactic acid (lactate). The lactic acid is stored in muscles and turned into pyruvate
Describe Alcoholic Fermentation
produces 2 ATP’s, CO2, and ethyl alcohol
