Term
| List the 3 stages of cellular respiration. |
|
Definition
Glycolysis
Citric Acid Cycle
Electron Transfer Chain and Oxidative phosphorylation |
|
|
Term
| What main enzymatic reaction links glycolysis to the CAC? What main enzymatic steps link the CAC to the ETC? What do all 3 have in common? |
|
Definition
Pyruvate dehydrogenase
NADH Dehydrogenase
Succinate Dehydrogenase;
They are all oxidoreductases |
|
|
Term
| What is moonlighting in the context of proteins? |
|
Definition
| A protein that performs 2 unrelated functions in a cell. |
|
|
Term
| What is substrate channeling? |
|
Definition
| When the intermediary product of one enzyme is passed directly to another enzyme or active site without being released into a solution. |
|
|
Term
| What are anaplerotic reactions? |
|
Definition
| Reactions that produce citric acid cycle intermediates |
|
|
Term
| What is an amphibolic pathway? Name a major amphibolic pathway. |
|
Definition
| A pathway that functions in both catabolism and analbolism. Citric Acid Cycle |
|
|
Term
| What is the chemiosmotic theory? |
|
Definition
| Most ATP synthesis in respiring cells uses the potential energy stored in an electrochemical gradient across the inner membrane of the mitochondria which is established by the pumping of protons across the membrane using the energy in the form of NADH and FADH2. |
|
|
Term
| How many protons can NADH pump across a membrane and how many ATP can be derived from NADH from cellular respiration? |
|
Definition
|
|
Term
| List the 3 types of electron transfers used in oxidative phosphorylation. |
|
Definition
Direct transfer
Transfer of hydrogen
Transfer of hydride |
|
|
Term
| List the 4 major types of electron carriers used in the ETC. |
|
Definition
Universal carriers
Ubiquinone
Fe-S centers
Hemes |
|
|
Term
| What is the source of electrons used at the starting complex of the electron transport chain ... is the starting complex? |
|
Definition
| NADH starts with complex 1; succinate starts with complex 3 |
|
|
Term
|
Definition
| Q cycle is the mechanism in compolex 3 used to pump protons across the membrane via the squential use of 2 ubiquinols that split each of their pairs of electrons between a flow to cytochrom c and a flow to another ubiquinone. |
|
|
