7.4 Study Guide Flashcards
What is the first process in cellular respiration? How does it happen?
Glycolysis- Works by breaking down glucose into pyruvate and 2 ATP.
What is the second process in cellular respiration? How does it work?
The Link Reaction- Chemical reaction with the products of glycolysis. Makes the products Acetyl-CoA, CO2, and NADH.
What happens to the CO2 after it is made in any part of cellular respiration?
It is breathed out.
What is the third process in cellular respiration? How does it work?
The Krebs Cycle- chemical reaction with the products of the Link reaction. Produces CO2, ATP, NADH, and FADH2.
How are electrons carried throughout the entire process?
They are carried by NADH and FADH2.
What is the fourth and final process in cellular respiration?
The Electron Transport Chain- Uses the ATP Synthase to synthesize hydrogen ions and oxygen into about 30 ATP. The molecules go through ATP Synthase because they are pulled from the high-pressure intermembrane to the low-pressure matrix of the mitochondrion.
What happens if there’s no oxygen?
Glycolysis still happens, but it is caused by fermentation. Fermentation regenerates NADH back into NAD+. Alcoholic fermentation is not reversible, produces ethanol and CO2, and is performed by yeast, bacteria, and plants. Lactic fermentation is reversible, produces lactate/lactic acid, and is performed by fungi and animals. Both can occur without oxygen and doesn’t generate any ATP.
