Which statement is correct in describing the electron transport chain (ETC)? Electron transfer in the ETC and the proton transfer from the matrix to the intermembrane space are two unconnected proces The mitochondrial inner membrane is readily permeable to small ions The reactions of the ETC take place in the outer membrane of the mitochondria Electrons (stored in forms of reducing equivalents) generated by the citric acid cycle in the mitochondrial matrix can be used by the ETC

Which statement is correct in describing the electron transport chain (ETC)? Electron transfer in the ETC and the proton transfer from the matrix to the intermembrane space are two unconnected proces The mitochondrial inner membrane is readily permeable to small ions The reactions of the ETC take place in the outer membrane of the mitochondria Electrons (stored in forms of reducing equivalents) generated by the citric acid cycle in the mitochondrial matrix can be used by the ETC

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Which of the following regarding the ATP Synthase is INCORRECT? Protons flow through the a and c subunits The translocation of four protons through the ATP synthase fuels the synthesis of one ATP molecule The F1 domain can function as an ATPase The y subunit rotates while the xß dimers are stationary
Cyanide is a poisonous substance. Cyanide is a cytochrome c oxidase inhibitor that is competitive. The last enzyme of the electron transport chain in mitochondria is cytochrome c oxidase. One of the most common substrates for cytochrome c oxidase is oxygen.Would an increase in the concentration of oxygen affect the inhibitioncaused by cyanide?How would conditions in the mitochondrial intermembrane spacechange if cytochrome c oxidase and the electron transport chain are notfunctioning properly.. Explain why this change in conditions will be harmful to a cell.
Which of the following is a direct output of the mitochondrial electron transport chain? NADH CO2 H2O pyruvate
The following diagrams illustrate the two aqueous spaces and the inner membrane of a mitochondrion. In which diagram is the relative concentration of protons auch that ATP synthesis could occur if ATP synthase were present? (Gold spheres represent protons.) 圈圈圈圈圈 A B D E OA OB OC OD OE intermembrane space Anner membrane matrie
During cellular respiration, which of the following diffuses through ATP synthase? O Phosphates O Protons (H* ions) O ATP O Electrons O Carbon dioxide (CO2)
A cell is grown on minimal media containing only 3-phosphoglyceric acid as a source of carbon and energy. What is the most likely place this compound would enter the metabolic cycle? O Glycolysis O Conversion of Pyruvate to Acetyl-CoA O The TCA Cycle The Electron Transport Chain
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 high
Which compartment of the eukaryotic mitochondrion is responsible for the formation of NADH, and FADH2, during catabolism of pyruvate into carbon dioxide? the mitochondrial matrix the outer mitochondrial membrane the intermembrane space the inner mitochondrial membrane the thylakoid membrane The complete catabolism of glucose into CO2 and H2O generally yields a smaller amount of ATP in aerobic eukaryotes than in aerobic prokaryotes because the aerobic eukaryotes: generate more molecules of FADH2 during aerobic respiration have transport costs to get NADH into the mitochondrion generate more molecules of NADH during aerobic respiration are able to use pyruvate as a substrate for fermentation always produce ethanol rather than lactic acid as a byproduct
Describe with a summary picture the aerobic respiration from glucose (CHO) all the way to Co2 and water. Highlight, with yellow the flow of H (and then electrons and protons) and in red the ATP Include: inner membrane, outer membrane, matrix, intermembrane space glycolisis, Krebs cycle (citirc acid), e.t.c. (oxidative phosphorilation) ATP synthase, NADH dehydrogenase complex, cyt b-c1complex, cyt oxidase complex, ubiquinone, cytochrome-c glucose, pyruvate, acetyl-Co-A, H2O, O2, CO2, NADH, NAD+, FADH2, e-, H+, ATP, ADP +Pi direction of the arrows, inner membrane potential, gradient of protons, inner membrane transporters, outer membrane porins
We often describe respiration by the simple equation of 6 O2 + C6H1206 - 6 CO2 + 6 H20. However, as we've now covered, there's way more going on than what's represented by this one equation. Summarize the entire process of energy generation starting from glucose, covering the substances produced through each process involved (no need to summarize the individual steps), where these processes take place, how they interact with each. other, changes in energy and oxidation along the way, and what happens to the molecules produced in the end.
Like many fruits, apples contain not only fructose and glucose, but also sucrose, a dimerof fructose and glucose. Synthesizing sucrose is endergonic and so not spontaneous. Onerole of ATP is to facilitate reactions that would not occur spontaneously. The threephosphate groups are electron rich and tend to repel each other. Therefore, ATP is a bitlike a compressed spring, ready to kick off one phosphate group releasing energy.Consider: Fructose + glucose --> Sucrose delta G= 6.4 kcal/mol ATP --> ADP + Pi delta G= -7.3 kcal/mol a. Draw a simple energy diagram (including the relative energy of the reactants andproducts) that shows why the sucrose synthesis reaction doesn’t occur spontaneously. b. How could having these two reactions occur at the same time help with sucroseproduction? c. Draw the energy diagram that shows all the reactants and products for the combinedreactions. d. What is delta G for the combined reactions? e. Name a few of the biological processes in the body that…
An organism lives solely on Acetate. It has a normal Kreb’s Cycle. Its Electron Transport Chain accepts H from NADH at the first of 3 H pumps and H from FADH at the third of the 3 hydrogen pumps. Therefore, how many ATP does it produce per acetate molecule?