2 Which three statements below describe critical functions of ubiquinone (Q)in the electron transport system?Select 3 correct answer(s)Connects electron transport in Complexl to electron transport inComplex II.Q accepts electron pairs from FADH-containing enzymes in the citratecycle, fatty acid oxidation, and glycerol-3P dehydrogenase.Serves as a mobile electron carrier within the inner mitochondrialmembrane.Converts a 2 e- transport system into a 1 e- transport system by passingelectrons to cytochrome c.Translocates protons from the mitochondrial matrix to theintermembrane space.Transfers electrons from cytochrome c to Complex IV, and in theprocess, generates H₂O by reducing 02.0Functions as an anti-oxidant system that moves electrons from themitochondrial matrix to the cytosol.

Ubiquinone is also known as Coenzyme Q (CoQ). Ubiquinone occurs in three redox states of CoQ-…

Answered: Which three statements below describe…

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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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+.)
Referring to the figure below, explain why NADH yields more ATP than FADH2 does. Electron-transport and proton pump Oxidative phosphorylation Outer mitochondrial membrane H* -Intermembrane H+ H+ H+ space H* H+ H+ Cytochrome c H+ COQH, CoQ UU COQH2 CoQ JU U Inner mitochondrial membrane Ht e ATPase Complex II Complex II Complex IV Complex e ADP +P - Mitochondrial matrix NADH NAD+ FADH2 FAD АТР H+ -H+ H+ H20
In beta oxidation of fatty acids in mitochondria, ubiquinone (via FAD / FADH2) from the respiratory chain acts as an oxidizing agent in one oxidation step and NAD + as an oxidizing agent in the other oxidation step. Discuss the exchange of ATP per oxygen molecule consumed in the breakdown of fatty acids into acetyl-COAI in relation to the exchange of ATP perroxygen molecule consumed if only NADH is the electron source for the respiratory chain.
Although the outer mitochondrial membrane is permeable to all small molecules, the inner mitochondrial membrane is essentially impermeable in the absence of specific transport proteins. Consider this information answer: Present two types of benefits derived from separating the reactions of glycolysis in the cytosol from those that occur during the citric acid cycle in the mitochondrion.
If K* and valinomycin are added to respiring cells, fully coupled ATP-synthesizing mitochondria, explain what will happen to the pH gradient and the AY. Compare the action of valinomycin with gramicidin in ATP production and electron transport.
Using a generalized terminology (i.e. neither CIII nor CIV specific), explain how complex III and IV act as electron/proton charge separation device (not a proton pump) in mitochondria bioenergetics to create electron potential through the iner mitochondria membrane
Look at the diagram of the mitochondrial electron transport chain below and answer the questions that follow Ubiquinone Membrane Z Complex I Complex III Y Complex I| Succinate Fumarate H,0 NAD NADH There are 2 names for the component in the orange circle labelled Y, they are: and The name of the component X in the red circle is The membrane labelled Z is the membrane Which component accepts electrons from complex 1?
The reduction potentials of iron in each of the cytochromes in the electron transport complexesvary from 0.The reduction potentials of iron in each of the cytochromes in the electron transport complexes vary from 0.1 V to 0.39 V. Explain why these different values are necessary for the operation of this process
In the section dealing with “NAD+ in disease” it is mentioned that metabolomics resultsindicate that impaired mitochondrial function contributes to some of the mentioneddiseases. Which metabolites can potentially accumulate when complex I of theelectron transport chain is defective? Use Fig 1 for guidance
Consider a 24:1 △cis-9 fatty acid in the mitochondrion. For each fatty acid given, determine the following. 1. Gross ATP from b-oxidation cycles 2. Gross ATP from acetyl CoA produced 3. Gross ATP from conversion of propionyl CoA (if applicable) 4. Total number of ATP deducted 5. Total net ATP
Describe redox reactions involved in the three steps of aerobic cellular respiration under the following topics: 1. Description of the two coenzymes NAD and FAD and link them to each enzyme in glycolysis; pyruvate oxidation and citric acid cycle using the backpack analogy that I described in class. (20%) 2. Describe energy harvesting of the electrons and hydrogens carried by the coenzymes in the electron transport chain and chemiosmosis using the battery analogy I described in class. (20%) 3. Describe the steps of DNA replication in bacteria as shown in our slides emphasizing the need for the Okazaki fragments (20%) 4. Describe RNA transcription emphasizing the two strands of DNA and the orientation of mRNA (20%) 5. Describe mRNA translation emphasizing the role of ribosomes and tRNA for two amino acids (20%)
Draw and label a lipid bilayer containing the large mitochondrial trans-membrane protein complexes representing complex I, II, III, and IV, and ATP Synthase. Label your diagrams with the correct names for the membranes, Make two more of these drawings. Label the first one mitochondrial electron source and using a different ink color, indicate the source(s) of electrons. Label the second mitochondrial energy source, and indicate the source of energy driving the electron transport chain. In the third, label the mitochondrial electron acceptor in its proper position. Also include ATP synthase (in its correct orientation-the spherical part is on the opposite side of the membrane as the H+ reservoir). Use a different color of ink to show where the protons (H+) are pumped to drive ATP synthesis. also indicate where ATP is generated and were the power is stored to generate ATP. NOW, do the same thing with chloroplasts. Draw and label a lipid bilayer containing the large photosynthetic…

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