Chemiosmosis is described as an energy coupling mechanism that O a. builds up membrane potential across membrane O b. lowers pH in the intermembrane space. O c. phosphorylates substrate molecules. O d. uses the stored energy of the proton gradient to synthesize ATP O e. inhibits electron transfer along the electron transport chain.

Chemiosmosis is described as an energy coupling mechanism that O a. builds up membrane potential across membrane O b. lowers pH in the intermembrane space. O c. phosphorylates substrate molecules. O d. uses the stored energy of the proton gradient to synthesize ATP O e. inhibits electron transfer along the electron transport chain.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 10RQ: Chemiosmosis involves a. the movement of electrons across the cell membrane. b. the movement of...

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Chemiosmosis is described as an energy coupling mechanism that a. inhibits electron transfer along the electron transport chain. O b. builds up membrane potential across membrane O c. phosphorylates substrate molecules. d. uses the stored energy of the proton gradient to synthesize ATP O e. lowers pH in the intermembrane space.
Chemiosmosis is described as an energy coupling mechanism that Select one: O A. uses the stored energy of the proton gradient to synthesize ATP O B. builds up membrane potential across membrane O C. inhibits electron transfer along the electron transport chain. O D. phosphorylates substrate molecules. O E. lowers pH in the intermembrane space.
Which of the following statements describes the end step for the electron transport chain? A. H+ ions flow down the gradient to generate ATP B. electrons are transferred to NADH and FADH2 for chemiosmosis C. electrons are transferred to oxygen, causing it to split and take up H+ ions, which form water D. H+ are pumped across the inner membrane of mitochondria to establish an electrochemical gradient
Which of the following is true of the FoF1 ATPase under normal cellular conditions? Select all that are true. O a. It moves protons into the intermembrane space O b. It generates ATP O C. It directly consumes NADH O d. It is a passive transporter O e. It is an enzyme
ATP hydrolysis is directly coupled to the movement of O a. glucose across the animal-cell plasma membrane O b. sucrose into the plant vacuole O c. Cl- and HCO3- across the erythrocyte membrane O d. Ca2+ to the extracellular medium or sarcoplasmic reticulum lumen.
In chemiosmosis, discover the most direct source of energy that is used to convert ADP + Pi to ATP. * A. energy released as electrons flow through the electron transport system. B. energy released from substrate-level phosphorylation. C. energy released from ATP synthase pumping hydrogen ions against their concentration gradient. D. energy released from movement of protons through ATP synthase.
Consider the following diagram when answering the questions about cellular respiration. (a) Label the diagram. (b) Considering the electron transport chain. Why type of cell transport is happening at the ETC? Explain. (c) What type of cell transport is happening at ATP synthase? Explain. B A D E
What best explains the mechanism of old (and wicked dangerous) diet pills that acted as an uncoupling protein? e Select one: a. it decreased efficiency of oxidative phosphorylation b. individuals would only perform anaerobic respiration it increased the concentration gradient of protons C. O d. it decreased the kreb's cycle Oe. it increased osmosis Cue Dec 8 at 5pm H Jump to... → 14 d Next page
Consider the following diagram when answering the questions about cellular respiration. (a) Label the diagram. (b) Considering the electron transport chain. Why type of cell transport is happening at the ETC? Explain. (c) What type of cell transport is happening at ATP synthase? Explain. B D
26. Identify the correct statement that best describes about the chemiosmotic mechanism. * A. Explains about the transport of Na+ and K+ across cell membranes is by active transport. O B. Explains how transport by facilitated diffusion reaches a saturation limit. O C. A process in which proton gradient that drives the formation of ATP. O D. Explains about cytochromes which phosphorylate ADP to form ATP. 27 When oygen is present, determine the number of ATP yield per glucose
1)Where is the most Potential Energy Stored at the end of the Citric Acid Cycle? A. High energy electron NADH B. Electron Tansport chain C. G3P D. ATP molecuoles 2) The movement of several solutes simoultanously a. Simple diffusion b. bulk transport c. Passive trasnsport d. Active Trasnport E. Osmosis 3) What is the source of electrons for photosysthesis? a. Oxygen b. ATP c. water D. Glucose E. Carbon dioxide 3) Movement of several solute acrossss cocentration graidients A. Simple diffusion B. Bulk transpoert C. Passive trasnport D. Active Transport E. Facilitated diffusion
Describe the role of each of the membrane proteins shown in the picture below. Think about what is happening to the electrons and describe how energy is transformed as electrons move along the chain. Part of this involves the formation of the proton gradient. The other part is the explanation of the energetics of electron transport that you investigated above. In other words, the reason that electrons always flow from complex I to complex III to complex IV to oxygen.