Reagents, such as dinitrophenol, increase the permeability of the mitochondrial inner membrane to protons. The addition of dinitrophenol to a suspension of animal cells should decrease the rate of oxidation of NADH. increase lactic acid production. decrease the rate of pyruvate oxidation. stimulate ATP synthesis by mitochondria. inhibit mitochondrial ATP synthesis.
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- The Fo subunit of the ATP synthase is present in the ______ while the F1 subunit is in the ____. inner mitochondrial membrane; inner mitochondrial membrane mitochondrial matrix; inner mitochondrial membrane mitochondrial matrix; mitochondrial matrix Inner mitochondrial membrane; mitochondrial matrixHow is a gradient of H+ ions formed across the inner mitochondrial membrane? The electron transport chain uses ATP to pump H+ across the inner mitochondrial membrane against its electrochemical gradient ATP synthase generates a H+ ions gradient across the inner mitochondrial membrane The electron transport chain of proteins contains pores that are leaky to H+ ions The electron transport chain uses energy from the transfer of an electron donated by NADH to pump H+ across the inner mitochondrial membrane against its electrochemical gradientATP production during the Electron Transport Chain is driven by which of the following? A. Movement of H+ ions across mitochondrial membranes via ATP synthase B. Movement of electrons down a gradient of charge C. Oxygen accepting H+ ions D. NADH and FADH2 donating phosphate to ADP E. Release of CO2
- The image shows the flow of electrons through electron carriers I, II, III, and IV within the mitochondrial inner membrane. The electronegativity of the protein carriers determines their capacity to attract electrons. Based on the image, which of the following best describes the electronegativity of the carriers and the synthesis and utilization of ATP during the electron-transfer process? Electron carrier I is the least electronegative, and electron carrier IV is the most electronegative. ATP is required for electron transfer between carriers. Electron carrier I is the most electronegative, and electron carrier IV is the least electronegative. ATP is not required for electron transfer between carriers. Electron carrier I is the most electronegative, and electron carrier IV is the least electronegative. ATP is utilized in a distinct reaction, not directly coupled with electron transfer. Electron carrier I is the least electronegative, and electron carrier IV is the most…Which of the following conditions must be met within the cell In order for the enzyme pyruvate carboxylase to be activated? Select all that apply. NADP+ levels must be high Phosphofructokinase must be in the activated R-state Beta-oxidation of fatty acids happening in the mitochondrial matrix AMP levels must be high ATP levels must be highWhich of the following statements about the generation of ATP in the electron transport chain is correct? a. The generation of ATP from ADP coupled to electron transfer occurs by substrate level phosphorylation as in glycolysis. b. ATP synthase generation of ATP involves a rotating structure inside the inner mitochondrial membrane. c. ATP synthase generation of ATP involves a rotating structure outside the inner mitochondrial membrane. d. Electron transport generates a proton gradient across the outer mitochondrial membrane.
- Which of the following statements is true?a) the ATP synthase adds electrons directly to ADP to make ATP b) acetyl CoA produced in the citric acid cycle carries electrons to the electrontransport chainc) the electron transport chain pumps protons from the cytosol into the inter-membrane space of mitochondriad) carbon monoxide is an electron transport chain blockerTaking into consideration glycolysis, the pyruvate dehydrogenase complex and the citric acid cycle, how many NAD+ molecules are reduced from a single molecule of dihydroxyacetone phosphate? 4 NAD+ are reduced 5 NAD+ are reduced 8 NAD+ are reduced 10 NAD+ are reduced None of the above answers are correctWhen muscles contract, a chain of events result in greater activity by the TCA cycle. All of the following are links in that chain EXCEPT: The ADP concentration increases. Rate of respiration and oxygen consumption increases. The electron transport chain produces more water. The concentration of NADH decreases and the concentration of NAD+ increases. 2) (True or False )______The concentration of oxaloacetate drops and TCA cycle is halted which leads to the synthesis of ketone bodies. 3) NADPH is used for: a) Oxidizing vitamin E b) Oxidizing glutathione c) Reductive biosynthesis of fatty acids d) β-oxidation of fatty acids
- Which of the following should inhibit the PDC by feedback inhibition? Choose all that apply. NADH NAD+ CoASH Acetyl-CoA Pyruvate Glucose 6-phosphateThe alternative fate of pyruvate in the mitochondrial matrix is the conversion of pyruvate to __________ catalyzed by __________________ ? Oxaloacetate, pyruvate carboxylase Alanine, alanine aminotransferase Lactate, Lactate dehydrogenase Acetyl-Co, PDHCIn step 6 of the Krebs cycle succinate ___ to fumerate a reaction that takes place in the ___ oxidizes ;inner mitochondrial membrane reduces ;mitochondrial matrix reduces; inner mitochondrial membrane Oxidizes; mitochondrial matrix