QUESTION 38All of the following statements about mitochondrial oxidative phosphorylation are true EXCEPTO a. The proton-motive force is the potential energy created from the concentration gradient and charge difference of hydrogen ions.O b. The Fo unit of ATP synthase projects into the matrixO c. ATP synthesis occurs as the F₁ unit of ATP synthase rotates to expose active sites.O d. ATP synthase can also act as an ATPase, and the ATP synthesis function is favored.Oe. The electron transport chain has many steps because each reaction releases a small amount of energy that can be captured in anendergonic reaction.k Save and Submit to save and submit. Click Save All Answers to save all answers.#380 F3$4F4%5MacBook Pro6&1

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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

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Complex No.3 named: Select one: O a. succinate dehydrogenase Ob. NADH dehydrogenases c. Cytochrome a+a3 Od. cytochromes bc,
Q5 Lactate dehydrogenase is one of the many enzymes that require NADH as coenzyme. It catalyzes the conversion of pyruvate to lactate: NADH + H* NAD C=0 НО -С—Н lactate dehydrogenase CH3 CH3 Pyruvate L-Lactate Draw the mechanism of this reaction (show electron-pushing arrows). Show all structures and show the movement of electrons. (Hint: This is a common reaction throughout metabolism)
The ∆G for the streaming of H+ down the concentration gradient that powers ATP synthase is Positive Or Negative
Consider a 24:1 △cis-9 fatty acid in the mitochondrion. For each fatty acid given, determine the following. Gross ATP from b-oxidation cycles Gross ATP from acetyl CoA produced Gross ATP from conversion of propionyl CoA (if applicable) Total number of ATP deducted Total net ATP
This UCP1 protein allows the protons (H+) of the mitochondrial intermembrane space to enter the mitochondrial matrix without going through the ATP synthase. This bypass represents a shortcut for protons and uncouples (i.e. eliminates the interrelationship between) the following two processes: The entry of protons inside the mitochondrial matrix, following their concentration gradient. The phosphorylation of ADP into ATP by the ATP synthase. It is this uncoupling that gave the protein its name: uncoupling protein 1 (UCP1). The following figure shows the location of UCP1 when it is expressed (synthesized) in the brown adipose tissues (BAT) of hibernating mammals. Question 12 Based on the UCP1 protein structure shown earlier, and based on the figure above, what type of protein is UCP1? Question 12 options: a) A primary active transporter. b) A motor protein.…
Concerning the citric acid cycle (TCA cycle), which of the following statements is false? The TCA cycle generates electron carriers Oxidation of pyruvate in the matrix of the mitochondria produces sixteen total electrons Substrate level phosphorylation in the TCA cycle produces 2 GTP per the oxidation of a single glucose molecule The fate of the carbonyl carbon of acetyl CoAin the TCA cycle is to be lost as CO2 in the second turn Oxygen is required to regenerate electron acceptors
Which statements below reflect differences between the electron transport chain (ETC) that operates on the thylakoid membrane and that on the inner mitochondrial membrane? Choose ALL that are true -The ETC on the thylakod contrians only one protein that pumps protons across the membrane, while that on the mitochondrial membrane contains 3. -The ETC on the mitochondrial membrane uses ATP synthase, while the ETC on the thylakod does not. -The final electron acceptor in the mitochondrial ETC is oxygen, while the final electron acceptor in the thylakoid ETC is NADP+ -A proton motive force is generated only across the inner mitochondrial membrane but not acorss the tnylakoid membrane.
In cellular respiration, can NADH and oxygen levels increase/decrease at the same time or not? What is the reason on why they increase/decrease at the same time or at diffrent times?
NADH and succinate are substrates that can be oxidized and will consume oxygen. Rotenone and cyanide are inhibitors of the electron transport chain and can block oxidation. Match each description of the effector to the appropriate oxygen consumption. A plot may match more than one description. Some plots will not match any description. (At least one of the matches in the image was incorrect)
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.
In oxidative phosphorylation (mark all that are true)... Choice 1 of 7:Succinate contributes 2e- to Complex II and 2H+ to the mitochondrial proton gradient. Choice 2 of 7:NADH in the matrix passes 2 e- to coenzyme Q via Complex I. Choice 3 of 7:Complexes I, II, III, and IV each contribute to the matrix proton gradient. Choice 4 of 7:O2 stabilizes the catalytically active conformation of Complex V. Choice 5 of 7:Reversible protonation of c subunits leads to rotation of the Complex V gamma subunit. Choice 6 of 7:Each β subunit can bind ATP tightly under the right conditions. Choice 7 of 7:For every 3 protons that pass across the inner mitochondrial membrane, 1 ATP is produced. Below are screenshots of the answer from two different sources (for your consideration)
During glycolysis, glucose is converted to pyruvate. Pyruvate then is converted to Acetyl coA and enters the citric acid cycle. Per one (1) glucose molecule that undergoes glycolysis and TCA cycle, complete the table below ATPS produced Products from glycolysis 1. ATP 2. NADH 3. _Pyruvate Equivalence in ATP ATP ATPS АТР Equivalence in ATP ATPS Products from TCA ATPS produced АТР 4. NADH 5. FADH2 6. GTP ATPS ATP ATPS ATP TOTAL ATP Produced 7. ATP

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