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AP BIOLOGY: PHOTOSYNTHESIS AND CELLULAR RESPIRATION UNIT 3 TEST REVIEW
Terms in this set (82)
Where does Glycolysis occur in the cell? HINT: NOT THE MITOCHONDRIA!
During Glycolysis, what is broken down into what? Each have three carbons
During Glycolysis, one glucose molecule (C6H12O6) is broken down into two smaller pyruvate molecules (C3H4O3) each of which have three carbons
In the process of Glycolysis what is created and what molecules are converted by receiving an electron and H+?
Two ATP molecules are created and NAD+ is converted to NADH by receiving an electron and H+ ION
What is oxidized during Glycolysis?
Glucose is oxidized when it is broken down into two pyruvate molecules
What is reduced?
NAD+ is reduced when it is converted to NADH by receiving an electron and hydrogen atom from oxidation of glucose (remember OILRIG)
So, what happens between Glycolysis and the Krebs Cycle?
The pyruvate molecules made during Glycolysis diffuse from the cytoplasm through the outer and inner mitochondrial membrane into the mitochondrial matrix (BASIC WAY TO REMEMBER: they go in the membrane, out, then in the matrix.)
What happens once the pyruvate molecules are in the mitochondrial matrix?
Pyruvate dehydrogenase occurs which helps to break down one molecule of pyruvate to an acetyl group and a single carbon dioxide molecule joins with a molecule called coenzyme A to create Acetyl CoA
Where does the Krebs Cycle occur?
It happens in the mitochondrial matrix
What happens during the Krebs (OR CITRIC ACID CYCLE)?
Acetyl CoA is broken down to CO2
Describe the process
Two ATP molecules are created and six molecules of NAD+ are converted to NADH by receiving an electron and H+ ion. ALSO: Two molecules of FAD (another type of electron acceptor used during the electrong transport chain) is converted to FADH2 by receiving electrons and hydrogen atoms.
What is oxidized during the Krebs Cycle?
Acetyl CoA when it is broken down into CO2
What is reduced during the Krebs Cycle?
NAD+ and FAD are reduced when they receive electrons and hydrogen atoms from the oxidation of Acetyl CoA
Where does the electron transport chain occur? Why does it occur here?
The ETC happens along the inner mitochondrial membrane's folds and it happens here because folding the membrane creates more surface area to fit more electron transport chain protein complexes and thus makes the process far more efficient for making ATP.
What happens during the ETC?
High energy electrons are harvested from the electron carriers NADH AND FADH2 where the energy from these lectrons is used to fuel the creation of ATP from ADP and Pi
What is the first step of the ETC of the 6 steps involved?
NADH and FADH2 release high energy electrons at the beginning of the electron transport chain complex. In this process, NADH and FADH2 are converted back to NAD+ and FAD
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