You are watching: Which of the following would cause cells to switch from cellular respiration to fermentation?
ANSWER A. ATP synthase acts as a proton channel in the inside mitochondrial membrane. If that channel to be inhibited, protons would certainly still it is in pumped out of the matrix by the ETC yet would be can not to flow back in, leading to the pH come rise.
What is a significant advantage come the cell in having actually pyruvate dehydrogenase consists a large, multi-enzyme complex?a. Metabolism can happen with greater specificity.b. Metabolism have the right to occur more rapidly.c. Metabolism have the right to be regulated.d.Metabolism can happen in the mitochondrial matrix.
ANSWER A. The series of reaction steps associated in pyruvate handling can take place without the need for molecule to diffuse larger distances in the mitochondrial matrix from one enzyme to the next.
What would take place to NADH levels in a cabinet in the first couple of seconds after ~ a drug has actually poisoned the enzyme that combines acetyl CoA and oxaloacetate to type citrate?a.NADH levels would increase, then go back to normal.b. NADH level would stay unchangedc. NADH levels would decrease.d. NADH levels would certainly increase.
ANSWER C. 6 the 10 NADH molecules developed during glucose oxidation are assets of the citric mountain cycle.
The visibility of many sac-like cristae results in a big amount the membrane inside mitochondria. Mean that part mitochondria had couple of cristae.How would their calculation of ATP compare through that that mitochondria with numerous cristae?How would their calculation of ATP compare through that the mitochondria with plenty of cristae?a. Castle would develop the same amount of ATPb.they would create much much more ATP than mitochondria with numerous cristaec. They would create much less ATP 보다 mitochondria with numerous cristae
Why go aerobic respiration produce much more ATP than anaerobic respiration?A. Anaerobic organisms store energy in the kind of GTP.B. Oxygen has very high electronegativity compared with other electron acceptors, resulting in a better release that energy during electron transfer and more proton pumping.C. Anaerobic organisms have actually fewer electron deliver chains and ATP synthase molecules than aerobic organisms.D. Anaerobic respiration is usual only because that prokaryotes. Castle need much less energy than aerobic organisms.
What go the chemiosmotic theory claim?A. Substrate-level phosphorylation wake up in the electron transport chain.B. Substrate-level phosphorylation occurs in glycolysis and the citric mountain cycle.C. Electron transport chains create ATP indirectly, by the production of a proton-motive force.D. The electron carry chain is located in the within membrane that mitochondria.
Suppose a medicine were included to mitochondria that enabled protons to easily pass through the inner membrane.Which that the following mitochondrial activities would most likely be inhibited?a. The citric acid cycleb. Substrate-level phosphorylationc. Oxidative phosphorylationd. The electron deliver chain
What is the function of the reactions in a fermentation pathway?a. To create NAD+ native NADH, for this reason glycolysis have the right to continueb. To create NADH indigenous NAD+, for this reason electrons can be donated come the electron deliver chainc. Come synthesize pyruvate from lactated. Come synthesize electron acceptors, so the cellular respiration deserve to continue
Which that the complying with would cause cells to switch from to move respiration to fermentation?a. The proton-motive force runs down.b. Pyruvate is no available.c. NADH and FADH2 supplies are low.d.The final electron acceptor in the etc is not available.
Compare and also contrast the regulation the isocitrate dehydrogenase in step 3 the the citric acid cycle v what you have learned about phosphofructokinase in glycolysis. What carry out they have actually in common?a. Both enzymes space regulated through allosteric inhibition.b. Both enzymes produce NADH.c. Both enzymes are regulated through feedback inhibition.d. Both enzymes develop ATP.
isociltrate dehydrogenase: regulation by NADH and also competitive inhibition. Phosphofructokinse : regulated by ATP and also allosteric inhibition.
Compare and also contrast substrate-level phosphorylation and also oxidative phosphorylation. What carry out they have actually in common? a. Both processes occur under the action of ATP synthase.b. Both processes create NADPH from NADH and also Pi.c. Both processes develop ATP from ADP and Pi.d. Both processes take place in the procession of mitochondria.
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substrate-level phosphorylation: 1. Wake up under the activity of pyruvate kinase and also phosphoglycerate kinase. 2. Occurs as soon as enzymes eliminate a high power phosphate from a substrate and also directly transfer it come ADP. Oxidative phosphorylation: 1. Occurs under the action of ATP synthase 2. Occurs when electrons move through the ETC and produce a proton motive pressure that drives ATP synthase.
If you were to reveal cells that room undergoing moving respiration come a radiation oxygen isotope in the form of O2, which of the complying with molecules would certainly you suppose to be radio labeled?a. NADHb. Waterc. CO2d. Pyruvate
After the 4 steps of cellular respiration, whereby is most of the energy stored?a. In the electron move chainb. In the type of ATPc. In the kind of FADH2d. In the type of NADH
Where does the glycolysis occur in eukaryotes?a. In the inside membrane that mitochondriab. In the intermembrane room of mitochondriac. In the cytosold. In the procession of mitochondria