Chapter 6/13: Metabolism & ATP Phosphorylation Flashcards
What type of reactions involve building macromolecules from small precursors by using energy?
Anabolism
What type of reaction involve breaking down larger molecules to obtain energy?
Catabolism
What is cell’s energy currency?
Adenosine triphosphate (ATP)
What are three main mechanisms for synthesizing ATP?
Substrate-level phosphorylation, Oxidative phosphorylation, Photophosphorylation
What type of mechanism for ATP synthesis uses an enzyme to transfer a phosphate from an organic molecule to ADP?
Substrate-level phosphorylation
What type of mechanism for ATP synthesis uses a proton gradient to attach inorganic phosphate to ADP?
Oxidative phosphorylation
What type of phosphorylation occurs during glycolysis?
Substrate-level phosphorylation
What is the end-product of glycolysis?
2 Pyruvate
How many ATP molecules does glycolysis require?
2 ATP
How many ATP molecules are synthesizes during glycolysis?
4 ATP (net: 2 ATP)
What is oxidative phosphorylation also known as?
Chemiosmosis
What type of phosphorylation involves electrons being passed through an electron transport system?
Oxidative phosphorylation
What is used to drive ATP synthesis in oxidative phosphorylation?
PMF (proton motive force)
What process does oxidative phosphorylation typically occur in?
TCA cycle
What product results from the oxidative phosphorylation of 2 pyruvate after glycolysis?
6 CO2
How much ATP can be synthesized from the PMF generated by 1 NADH?
2.5 ATP
How much ATP can be synthesized from the PMF generated by 1 FADH2?
1.5 ATP
What type of phosphorylation is a subcomponent of both aerobic and anaerobic respiration?
Oxidative phosphorylation
What type of phosphorylation occurs in phototrophic bacteria?
Photophosphorylation
What type of phosphorylation produces ATP using a proton gradient and an electron transport system?
Photophosphorylation
What type of phosphorylation requires light energy?
Photophosphorylation
What is the ATP generated by photophosphorylation used to drive?
Carbon fixation
What type of phosphorylation can be oxygenic or anoxygenic?
Photophosphorylation