The proton-motive force drives the rotation of the Y subunit of ATP synthase. This creates conformational changes in the active sites of ATP synthase that accelerate the rate of bond formation between ADP and P, through the stabilization of a tetrahedral intermediate. True False
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The proton-motive force drives the rotation of the Y subunit of ATP synthase. This creates conformational changes in the active sites of ATP synthase that accelerate the rate of bond formation between ADP and P, through the stabilization of a tetrahedral intermediate.
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- The aspartate–malate shuttle transfers electrons from cytoplasmic NADH to the electron transport system. Which of the following molecules is not directly involved in this pathway? a. malate b. oxaloacetate c. citrate d. α-ketoglutarateMyristoleic acid is a monounsaturated fatty acid found in small amounts in a variety of foods. Calculate the net ATP yield from the complete β-oxidation of myristoleic acid. The formula of myristoleic acid is shown below (it is assumed that the total ATP production is the same for both saturated and unsaturated fatty acids having the same carbon chain length). CH3-(CH2)3-CHCH-(CH2)7-COOH (Given: The oxidation of one NADH yields 2.5 ATP; the oxidation of one FADH2 yields 1.5 ATP; and the oxidation of one acetyl CoA yields 10 ATP. ) Group of answer choices a. 96 ATP b. 92 ATP c. 94 ATP d. 34 ATP e. 36 ATPWhich one of the following statements about coenzyme Q is not true? a. coenzyme Q is lipid-soluble b. coenzyme Q can accept one or two electrons c. conenzyme Q often diffuses in the membrane from one protein complex to another in its semiquinone form d. Coenzyme Q is one of the five electron carriers used in the electron transport chain
- All of the following classes of enzymes catalyze the Fatty acid synthesis except a. synthetase b. Synthase c. Carboxylase d. DehydrgenWhich of the following enzyme components of fatty acid synthase has/have a thiol group? A. ketoacyl-ACP reductase B. ketoacyl-ACP synthase C. enoyl- ACP reductase D. acyl carrier proteinWhich of the following statements are true?For each, explain why or why not.(a) All coenzymes are electron-transfer agents.(b) Coenzymes do not contain phosphorus or sulfur.(c) Generating ATP is a way of storing energy.
- TRUE OR FALSE: The most reactive part of the ATP molecule is the triphosphate group. Creatine phosphate is an energy source in muscle tissue. Phosphate groups may serve as “on” or “off” switches for some enzymes. Oxidatiom of acetaldehyde CH3CHO would yield more energy than the oxidation of ethane CH3CH3 ATP is an activated electron carrier.The resulting molecule(s) during the investment phase of Glycolysis. The substrate that is not produced during the non-oxidative phase of the pentose phosphate pathway. The sugar nucleotides responsible for the biosynthesis of glycogen and many other carbohydrate derivatives.true/false: The cofactor ATP is essential in all transamination reactions.
- Predict the function of each of the following enzyme: 1. Pyruvate carboxylasethreose-4 phosphate (a 4 carbon aldose) is fed into glycolysis after a decarboxylation reaction that uses an NAD+ to generate a 3 carbon aldose. How many ATP and NADH are generated by breaking down this molecule to pyruvate?Which of the following statements concerning ATP is true? a. The free energy value for the hydrolysis of ATP is nearly the same for ADP. b. The free energy value for the hydrolysis of ATP is greater than that for ADP. c. ATP hydrolysis is more likely at pH 5 than at pH 7. d. One mole of glycerate-1,3-bisphosphate can phosphorylate one mole of AMP to yield ATP.