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Concept 9.3: After pyruvate is oxidized, the citric acid cycle completes the energy-yielding oxidation of organic molecules. • In the presence of oxygen, pyruvate enters a mitochondrion, where the oxidation of glucose is completed in the_ • Oxidation of Pyruvate to Acetyl CoA (Figure 9.10) • Before the citric acid cycle can begin, pyruvate must be converted to acetyl coenzyme A (acetyl CoA), which links glycolysis to the citric acid cycle. • This step is carried out by a multienzyme complex that catalyzes three reactions. • Oxidation of pyruvate and release of CO2 Reduction of NAD* to NADH Combination of the remaining two-carbon fragment and coenzyme A to form acetyl CoA. Reaction summary

Concept 9.3: After pyruvate is oxidized, the citric acid cycle completes the energy-yielding oxidation of organic molecules. • In the presence of oxygen, pyruvate enters a mitochondrion, where the oxidation of glucose is completed in the_ • Oxidation of Pyruvate to Acetyl CoA (Figure 9.10) • Before the citric acid cycle can begin, pyruvate must be converted to acetyl coenzyme A (acetyl CoA), which links glycolysis to the citric acid cycle. • This step is carried out by a multienzyme complex that catalyzes three reactions. • Oxidation of pyruvate and release of CO2 Reduction of NAD* to NADH Combination of the remaining two-carbon fragment and coenzyme A to form acetyl CoA. Reaction summary

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Concept 9.3: After pyruvate is oxidized, the citric acid cycle completes the energy-yielding oxidation of organic molecules. • In the presence of oxygen, pyruvate enters a mitochondrion, where the oxidation of glucose is completed in the_ • Oxidation of Pyruvate to Acetyl CoA (Figure 9.10) • Before the citric acid cycle can begin, pyruvate must be converted to acetyl coenzyme A (acetyl CoA), which links glycolysis to the citric acid cycle. • This step is carried out by a multienzyme complex that catalyzes three reactions. • Oxidation of pyruvate and release of CO2 • Reduction of NAD* to NADH Combination of the remaining two-carbon fragment and coenzyme A to form acetyl CoA. • Reaction summary • Inputs: Products: • The Citric Acid Cycle (Krebs Cycle or Tricarboxylic Acid Cycle) (Figure 9.11 and 12) • The citric acid cycle completes the breakdown of pyruvate to CO2 • Products per turn: 21A_ 3 N__ and 1 F o The citric acid cycle has eight steps, each catalyzed by a specific enzyme. • The acetyl group of a. _ joins the cycle by combining with ox forming citrate. • The next seven steps decompose the citrate back to oxaloacetate, making the process a cycle. • The NADH and FADH2 relay electrons to electron transport chain.
Transcribed Image Text:Concept 9.3: After pyruvate is oxidized, the citric acid cycle completes the energy-yielding oxidation of organic molecules. • In the presence of oxygen, pyruvate enters a mitochondrion, where the oxidation of glucose is completed in the_ • Oxidation of Pyruvate to Acetyl CoA (Figure 9.10) • Before the citric acid cycle can begin, pyruvate must be converted to acetyl coenzyme A (acetyl CoA), which links glycolysis to the citric acid cycle. • This step is carried out by a multienzyme complex that catalyzes three reactions. • Oxidation of pyruvate and release of CO2 • Reduction of NAD* to NADH Combination of the remaining two-carbon fragment and coenzyme A to form acetyl CoA. • Reaction summary • Inputs: Products: • The Citric Acid Cycle (Krebs Cycle or Tricarboxylic Acid Cycle) (Figure 9.11 and 12) • The citric acid cycle completes the breakdown of pyruvate to CO2 • Products per turn: 21A_ 3 N__ and 1 F o The citric acid cycle has eight steps, each catalyzed by a specific enzyme. • The acetyl group of a. _ joins the cycle by combining with ox forming citrate. • The next seven steps decompose the citrate back to oxaloacetate, making the process a cycle. • The NADH and FADH2 relay electrons to electron transport chain.
Question 5 Review Concept 9.3. Match the tem and its description. Each term can only be used once. oxidation of pyruvate to acetyl CoA outputs | Choose 1 citric acid cycle outputs [ Choose ]
Transcribed Image Text:Question 5 Review Concept 9.3. Match the tem and its description. Each term can only be used once. oxidation of pyruvate to acetyl CoA outputs | Choose 1 citric acid cycle outputs [ Choose ]
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