The extraction of energy from food molecules by aerobic organisms can be described as taking place in three stages. Select the statements that correctly describe the three major stages in the energy extraction from food. In the second stage, monomers are broken down, and a small amount of ATP is produced. In the third stage, fuel molecules are completely oxidized to CO₂, and no ATP is produced. In the third stage, fuel molecules are completely oxidized to CO₂, and a small amount of ATP is produced. In the third stage, fuel molecules are completely oxidized to CO₂, and most of the ATP needed for cellular processes is produced. In the first stage, macromolecules are converted to monomers, and a small amount of ATP is produced. In the first and second stages, the majority of ATP needed for cellular processes is produced. Incorrect

Biochemistry
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ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
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Chapter1: Biochemistry: An Evolving Science
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**The Extraction of Energy from Food Molecules by Aerobic Organisms**

The process of extracting energy from food molecules in aerobic organisms occurs in three main stages. The following statements describe these stages:

- **Statement 1**: In the second stage, monomers are broken down, and a small amount of ATP is produced. 
- **Statement 2**: In the third stage, fuel molecules are completely oxidized to CO₂, and no ATP is produced.
- **Statement 3**: In the third stage, fuel molecules are completely oxidized to CO₂, and a small amount of ATP is produced.
- **Statement 4**: In the third stage, fuel molecules are completely oxidized to CO₂, and most of the ATP needed for cellular processes is produced. (**Correct**)
- **Statement 5**: In the first stage, macromolecules are converted to monomers, and a small amount of ATP is produced.
- **Statement 6**: In the first and second stages, the majority of ATP needed for cellular processes is produced. (**Incorrect**)

The process primarily involves the conversion of macromolecules into smaller units, the breakdown of these units, and their further oxidation to produce energy in the form of ATP, with the majority being synthesized during the third stage.
Transcribed Image Text:**The Extraction of Energy from Food Molecules by Aerobic Organisms** The process of extracting energy from food molecules in aerobic organisms occurs in three main stages. The following statements describe these stages: - **Statement 1**: In the second stage, monomers are broken down, and a small amount of ATP is produced. - **Statement 2**: In the third stage, fuel molecules are completely oxidized to CO₂, and no ATP is produced. - **Statement 3**: In the third stage, fuel molecules are completely oxidized to CO₂, and a small amount of ATP is produced. - **Statement 4**: In the third stage, fuel molecules are completely oxidized to CO₂, and most of the ATP needed for cellular processes is produced. (**Correct**) - **Statement 5**: In the first stage, macromolecules are converted to monomers, and a small amount of ATP is produced. - **Statement 6**: In the first and second stages, the majority of ATP needed for cellular processes is produced. (**Incorrect**) The process primarily involves the conversion of macromolecules into smaller units, the breakdown of these units, and their further oxidation to produce energy in the form of ATP, with the majority being synthesized during the third stage.
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