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23 Cards in this Set
- Front
- Back
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How does cellular respiration fit into the energy cycle of the biosphere?
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produce CO2 to fuel photosynthesis
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What is the structure of the mitochondria and how does it allow separate respiration reactions in space?
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outer membrane, inner membrane, cristae, matrix, compartmentalization
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What does glycolysis accomplish in cellular respiration and what are its steps?
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produce ATP NADPH and pyruvate. Energy Investment, Cleavage, and Energy Liberation.q
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What reactions made NADH from NAD+ and how do these work energetically?
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oxidation, e- lost goes into ETC
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What role do fructose-1,6 biphosphate and glyceraldehyde-3-phosphate play in glycolysis?
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2 ATP hydrolyzed create fructose-1,6 biphosphate. (energy investment) 6 carbon molecule breaks into 2 3 carbon molecules (G3P) Cleavage
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What do the terms substrate-level and oxidative phosphorylation refer to?
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glycolysis and Krebs cycle
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The molecule CO2 is produced as a by-product where in aerobic cellular respiration?
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Krebs
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What is the purpose of the H+/pyruvate symporter and where is it found?
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to move H+/pyruvate into the matrix
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What is the main accomplishment of the Krebs cycle and where does it occur?
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make ATP, NADPH, FADH2. matrix
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What is the role of the enzymes NADH dehydrogenase and ATP synthase in the electron transport chain?
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NADH translocates 4 H+ across inner membrane, helping to build electrochemical potential used to produce ATP. ATP uses flow of H+ through enzyme back into matrix to generate ATP.
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What is the importance of the H+ gradient in the electron transport chain?
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H+ pumped into the thylakoid generate increase H+ concentration. There H+ then diffuses back into the stroma through ATP synthase and ATP is made
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What is the role of cytochrome oxidase, in the electron transport chain and what is the significance of this action?
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uses electrons and H+ to reduce molecular O2 into H2O
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What is the key role of O2 in the electron transport chain?
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final electron acceptor
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How are important chemical reactions in the electron transport chain separated, that is- where do they occur?
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PSII, PQ, altochrome, PSI, Fd, ATP synthase
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What did the Racker-Stoeckenius experiment show?
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how ATP molecules occur
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How are cancer cells related to glycolysis and what is the Warburg effect?
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like to use glycolysis. Glycotic enzymes overexpressed
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How can other macromolecules be involved in aerobic respiration?
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NO3 accepts final electron. NADH can give up electron to other molecules
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What happens in the electron transport chain in an organism like E. coli and why is this an example of anaerobic respiration?
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uses 2 different NADH dehydrogenase and 2 different QP for a total of 4 different ETC's operating simultaneously
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In Photosystem II (PS II) of photosynthesis what does not happen
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H2O is split to release electrons
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This is NOT involved in the Krebs cycle
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O2
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Chemiosmotic photophosphorylation directly results in
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production of ATP
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What best describes which is found in glycolysis?
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NADH, ATP and pyruvate
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What is the role of cytochrome bc-1 in the electron transport chain and what is the significance of this action?
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receives electrons from NADH dehydrogenase and passes them to cytochrome
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