Whether the following statements are true or false: a. The reactions of beta-oxidation crop fatty acids into three-carbon pyruvate units. b. Most amino acids are converted into products that are oxidized by beta-oxidation. c. The final common pathway for carbohydrate, protein, and lipid catabolism is the same. d. Fat oxidation generates more ATP than protein or carbohydrate catabolism. e. Fat and protein catabolism takes place primarily in the cytosol. Introduction: Cellular respiration involves catabolic reactions to harness energy from food substances by breaking large molecules into simple ones. Glucose is the most preferred fuel used by all the cells of the body. Glycolysis, citric acid cycle, and the electron transport chain are the three steps of glucose metabolisms, which eventually produce a large number of ATP (adenosine triphosphate) molecules.

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Answer 1

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Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 23, Problem 10CYR

Summary Introduction

To review:

Whether the following statements are true or false:

a. The reactions of beta-oxidation crop fatty acids into three-carbon pyruvate units.

b. Most amino acids are converted into products that are oxidized by beta-oxidation.

c. The final common pathway for carbohydrate, protein, and lipid catabolism is the same.

d. Fat oxidation generates more ATP than protein or carbohydrate catabolism.

e. Fat and protein catabolism takes place primarily in the cytosol.

Introduction:

Cellular respiration involves catabolic reactions to harness energy from food substances by breaking large molecules into simple ones. Glucose is the most preferred fuel used by all the cells of the body. Glycolysis, citric acid cycle, and the electron transport chain are the three steps of glucose metabolisms, which eventually produce a large number of ATP (adenosine triphosphate) molecules.

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Which of the following statements about the "central role" of TCA is/are correct? a. Some metabolic intermediates of TCA are used as non-carbohydrate sources for gluconeogenesis. b. β-oxidation of lipids produces acetyl-CoA that can enter TCA. c. All metabolic intermediates in TCA are used in the biosynthesis of amino acids. d. Degraded amino acids are converted to metabolic intermediates of TCA, then to ketone bodies.

Chemical energy contained in the fatty acids that are produced in the digestion of triglycerides is converted to chemical potential energy in NADH or FADH2 in which of the following processes? a. oxidative phosphorylation b. gluconeogenesis c. Glycolysis d. B-oxidation e. all of the above

Before a fatty acid can undergo β-oxidation, it must be activated and then shuttled across the inner mitochondrial membrane. The activating agent and shuttle molecule are, respectively: A. CoA and carnitine B. CoA and citrate C. acetyl CoA and carnitine D. acetyl CoA and citrate

Answer 2

Question

Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 23, Problem 10CYR

Summary Introduction

To review:

Whether the following statements are true or false:

a. The reactions of beta-oxidation crop fatty acids into three-carbon pyruvate units.

b. Most amino acids are converted into products that are oxidized by beta-oxidation.

c. The final common pathway for carbohydrate, protein, and lipid catabolism is the same.

d. Fat oxidation generates more ATP than protein or carbohydrate catabolism.

e. Fat and protein catabolism takes place primarily in the cytosol.

Introduction:

Cellular respiration involves catabolic reactions to harness energy from food substances by breaking large molecules into simple ones. Glucose is the most preferred fuel used by all the cells of the body. Glycolysis, citric acid cycle, and the electron transport chain are the three steps of glucose metabolisms, which eventually produce a large number of ATP (adenosine triphosphate) molecules.

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Answer 3

Question

Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 23, Problem 10CYR

Summary Introduction

To review:

Whether the following statements are true or false:

a. The reactions of beta-oxidation crop fatty acids into three-carbon pyruvate units.

b. Most amino acids are converted into products that are oxidized by beta-oxidation.

c. The final common pathway for carbohydrate, protein, and lipid catabolism is the same.

d. Fat oxidation generates more ATP than protein or carbohydrate catabolism.

e. Fat and protein catabolism takes place primarily in the cytosol.

Introduction:

Cellular respiration involves catabolic reactions to harness energy from food substances by breaking large molecules into simple ones. Glucose is the most preferred fuel used by all the cells of the body. Glycolysis, citric acid cycle, and the electron transport chain are the three steps of glucose metabolisms, which eventually produce a large number of ATP (adenosine triphosphate) molecules.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

Chapter 23, Problem 10CYR

Summary Introduction