in the mitochondria pyruvate is converted into acetyl CoA so then acetyl CoA make its way to the TCA cycle and produces energy sources for oxidative phosphorylation. Pyruvate oxidation transforms pyruvate, a three-carbon molecule, into acetyl, a two-carbon molecule linked to Coenzyme A, generating NADH and releasing one carbon dioxide molecule in process the citric acid cycle is fundamental because runs on acetyl CoA as its fuel. i need more explanantion

in the mitochondria pyruvate is converted into acetyl CoA so then acetyl CoA make its way to the TCA cycle and produces energy sources for oxidative phosphorylation. Pyruvate oxidation transforms pyruvate, a three-carbon molecule, into acetyl, a two-carbon molecule linked to Coenzyme A, generating NADH and releasing one carbon dioxide molecule in process the citric acid cycle is fundamental because runs on acetyl CoA as its fuel. i need more explanantion

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter19: The Tricarboxylic Acid Cycle

Section: Chapter Questions

Problem 22P: Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is...

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Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is inhibited byÂ· NIADH. Pyruvate dehydrogenase is inhibited by AÎ¤Î¡. Citrate synthase is inhibited by NADH. Succinyl-CoA activates citrate synthase. Acetyl-CoA activates pyruvate carboxylase.
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
___ molecules of ATP are ultimately formed per every acetyl-CoA that enters the citric acid cycle and the remaining ATP molecules are generated via the ___ of NADH and FADH2. A) Nine; oxidation B) Ten; reduction C) Ten; oxidation D)Nine; reduction
The citric acid cycle is a critical sequence of reactions for energy production, which take place in the matrix of the mitochondria. The reaction cycle requires materials from the cytosol to be converted into acetyl CoA, which represents the starting point of a new cycle. Which of the following statements about acetyl CoA is true? (a) Acetyl CoA is recycled at the end of every cycle. (b) Oxaloacetate is attached to acetyl CoA to feed the citric acid cycle. (c) Triacylglycerol molecules are transported into the mitochondrial matrix and cleaved by lipases to produce acetyl CoA. (d) Oxaloacetate is converted directly into acetyl CoA to feed the citric acid cycle
Each acetyl CoA that enters in the citric acid cycle, 2 carbon dioxide molecules are released in reactions which are coupled with the production of NADH molecules from reduction of NAD+ molecules and FADH2 is alse released by reduction of FAD+. NADH and FADH2, pass their electrons to the electron transport chain, turning back into NAD+ and FAD+ Explain further
Concerning the citric acid cycle (TCA cycle), which of the following statements is false? a. Substrate level phosphorylation in the TCA cycle produces 2 GTP per the oxidation of a single glucose molecule b. The TCA cycle generates electron carriers c. Oxidation of pyruvate in the matrix of the mitochondria produces sixteen total electrons d. The fate of the carbonyl carbon of acetyl CoAin the TCA cycle is to be lost as CO2 in the second turn e. Radiolabeling of the methyl carbon of pyruvate in the TCA cycle shows the carbon signal to split through successive turns
A fatty acid (a long straight-chain carboxylic acid with an even number of carbons) is metabolized to acetylCoA, which can then enter the citric acid cycle to be further metabolized. A fatty acid with an odd number of carbons is metabolized to acetyl-CoA and one equivalent of propionyl-CoA. Propionyl-CoA cannot enter the citric acid cycle. Two coenzyme-requiring enzymes are needed to convert it to succinyl-CoA, a compound that can enter the citric acid cycle. Write the two enzyme-catalyzed reactions and include the names of the required coenzymes.
The completion of one cycle of the citric acid cycle oxidizing one acetyl CoA results in net... Group of answer choices 2 ATP produced consumption of 1 molecule of citrate consumption of 1 molecule of oxaloacetate production of 2 CO2 Which of the following is not a component of the citric acid cycle? Group of answer choices Oxaloacetate Succinyl CoA Malate Pyruvate Which of the following enzymes catalyzes an anaplerotic reaction? Group of answer choices citrate synthase pyruvate dehydrogenase complex malate dehydrogenase pyruvate carboxylase
Which of the following is the third step of Citric Acid Cycle? Select one: a. Succinyl-CoA becomes Succinate and forms one ATP molecule and Coenzyme A-SH b. Pyruvate is decarboxylated to become acetyl-CoA producing NADH and Carbon dioxide c. Isocitrate and then decarboxylated and oxidized to produce alpha-ketoglutarate, Carbon dioxide and NADH d. alpha-ketoglutarate is oxidized and decarboxylated to produce Succinyl-CoA, Carbon dioxide and NADH e. Succinate is oxidized to become fumarate forming FADH2 f. Oxaloacetate combines with the acetyl from acetyl-CoA to produce Citric acid(citrate) g. Citrate is rearranged to become Isocitrate h. Malate is oxidized to become oxaloacetate forming NADH i. Fumarate is combined with water to become Malate
Taking into consideration glycolysis, the pyruvate dehydrogenase complex and the citric acid cycle, how many NAD+ molecules are reduced from a single molecule of dihydroxyacetone phosphate? 4 NAD+ are reduced 5 NAD+ are reduced 8 NAD+ are reduced 10 NAD+ are reduced None of the above answers are correct
Which of the following statements is true about the citric acid cycle a. The Citric Acid Cycle is an 8-step cycle that produces the most electron carrier molecules throughout the process of cellular respiration. b. In Citric Acid Cycle, both the acetyl group and coenzyme A of Acetyl CoA are combined to oxaloacetate. c. In Citric Acid Cycle, glucose is only partially broken down and there are still remnants of glucose after this process. d. The ATP produced during this process is via oxidative phosphorylation
Before pyruvate enters the citric acid cycle, it is decarboxylated, oxidized, and combined with coenzyme A, forming acetyl CoA, carbon dioxide, and one molecule of (a) NADH (b) FADH2 (c) ATP (d) ADP (e) C6H12O6