What is the purpose of carnitine acyltransferase II?O formation of a fatty acyl-CoA molecule in the mitochondrial matrix after transport of a long chain acylcarnitine molecule fromthe cytosolO formation of an acylcarnitine molecule from an acyl-CoA molecule in the cytosol prior to transport across themitochondrial membraneO transport of an acylcarnitine molecule from the inner membrane space to the mitochondrial matrixO emulsification of long chain fatty acids prior to uptake by intestinal epithelial cells

Transferases are a class of enzymes that catalyze the transfer of a functional group, such as a…

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Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 10RE: Using the answer code on the right, indicate which form of energy production is being described: 1....

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An important function of the inner mitochondrial membrane is to provide a selectively permeable barrier to the movement of water soluble molecules and thus to generate different chemical environments on either side of the mem- brane. However, many of the substrates and products of oxidative phosphorylation are water soluble and must cross the inner membrane. How does this transport occur?
The inner mitochondrial membrane exhibits all of the fundamental characteristics of a typical cell membrane, but it also has several unique characteristics that are closely associated with its role in oxidative phosphorylation. What are these unique characteristics? How does each contribute to the function of the inner membrane?
Explain why an intact, impermeable mitochondrial membrane is essential forATP synthesis.
Sonicating a suspension of mitochondria produces submitochondrial particles derived from the innermitochondrial membrane. These membranous vesicles seal inside out, so that the intermembrane space of themitochondria becomes the lumen of the submitochondrial particle. Explain (or diagram) the process of electrontransfer and oxidative phosphorylation in these particles. Assuming all the substrates for oxidativephosphorylation are present in excess, does ATP synthesis increase or decrease with an increase in the pH ofthe fluid in which the submitochondrial particles are suspended? Why?
Mitochondrial oxidation of fatty acids is a major source of ATP, yet fatty acids can be oxidized elsewhere. What organelle, besides the mitochondrion, can oxidize fatty acids? What is the fundamental difference between oxidation oc- curring in this organelle and mitochondrial oxidation?
B-oxidation of a 15:0 fatty acid will result in the production of O 7 acetyl CoA, 7 FADH2, and 7 NADH O 7 acetyl CoA, 1 propionyl CoA, 8 FADH2, and 8 NADH 6 acetyl CoA, 1 propionyl CoA, 7 FADH2, and 7 NADH 6 acetyl CoA, 1 propionyl CoA, 6 FADH2, and 6 NADH
The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If noncyclic photosynthetic electron transport leads to the translocation of 7 H+/2e- and cyclic photosynthetic electron transport leads to the translocation of 2 H+/e-, what is the relative photosynthetic efficiency of ATP synthesis (expressed as the number of photons absorbed per ATP synthesized) for noncyclic versus cyclic photophosphorylation? (Assume that the CF1CF0-ATP synthase yields 3 ATP/14 H+.)
Using the answer code on the right, indicate which form of energy production is being described: 1. takes place in the mitochondrial matrix 2. produces H2O as a by-product 3. results in a rich yield of ATP 4. takes place in the cytosol 5. processes acetyl-CoA 6. takes place in the mitochondrial innermembrane cristae 7. converts glucose into two pyruvate molecules 8. uses molecular oxygen 9. accomplished by the electron transport system and ATP synthase (a) glycolysis (b) citric acid cycle (c) oxidative phosphorylation
The acetyl group shuttle transfers the acetyl group of acetyl-CoA, produced by oxidative decarboxylation of pyruvate in the mitochondrion, to the cytosol. What is the overall equation for the transfer of one acetyl group from the mitochondrion to the cytosol? Acetyl-CoA, (mit) + What is the cost of thi cost of shuttling an ad ATP + CoA (cyt) CoA (cyt) +NADH + H+ 2 ATP NAD+ +ATP citrate + ATP → acetyl-CoA (cyt) + roup? NADH + H+ +ADP +P; ADP + P + CoA (mit) CoA (mit) oxaloacetate + ADP + P₁ 2 ADP + 2 P₁ + NAD+ ATP(s)
What is the major route for protons moving from the inter membrane space back into the mitochondrial matrix during oxidative phosphorylation? 1. Protons carried across the membrane by a molecule of dinitrophenol 2. Protons are transported along with ADP by the ATP/ADP translocase.3. Protons enter the half channel in subunit a facing the inter membrane space and exit via the half channel facing the mitochondrial matrix. Choose 1 correct answer explain? Give typing answer with explanation and conclusion
MON TRANSPORT CHAIN Intermembrane Space 3 ACP Mitochondrial Matrix FADH FAD Copyrighs 0200n Benmin Cummings an impii s Addson identify the importance to keep the electrons (e-) running through the electron transport chain. The electrons move to and join with ADP to form ATP Electron movement causes the body to take in axygen. The electrons will flow through ATP Synthase in order to make ATP The energy of the moving electrons will power the transport of H+ to the intermembrane space. Next Previous 00
In the 1930s, some physicians prescribed low doses of a compound called dinitrophenol (DNP) to help patients lose weight. This unsafe method was abandoned after some patients died. DNP uncouples the chemiosmotic machinery by making the lipid bilayer of the inner mitochondrial membrane leaky to H+ . Explain how this could cause weight loss and death.

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