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The figures below show the two different types of anaerobic respiration: alcoholic fermentation (left) and lactate fermentation (right). Read the descriptions in the table that follows, and then select whether each statement describes alcoholic fermentation, lactate fermentation, or both. Check all that apply. Generates two CO2 A. Lactate Fermentation   B. Alcoholic Fermentation

The figures below show the two different types of anaerobic respiration: alcoholic fermentation (left) and lactate fermentation (right). Read the descriptions in the table that follows, and then select whether each statement describes alcoholic fermentation, lactate fermentation, or both. Check all that apply. Generates two CO2 A. Lactate Fermentation   B. Alcoholic Fermentation

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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The figures below show the two different types of anaerobic respiration: alcoholic fermentation (left) and lactate fermentation (right). Read the descriptions in the table that follows, and then select whether each statement describes alcoholic fermentation, lactate fermentation, or both. Check all that apply.

Generates two CO2

A. Lactate Fermentation
 
B. Alcoholic Fermentation
## Fermentation Pathways: Alcoholic and Lactate Fermentation ### Glycolysis Overview Both charts illustrate the process beginning with glycolysis. In glycolysis, glucose (a 6-carbon molecule) is broken down into two molecules of pyruvate (a 3-carbon molecule each). During this process: - 2 ATP molecules are consumed. - 4 ATP molecules are produced, resulting in a net gain of 2 ATP. - 2 NAD+ molecules are reduced to 2 NADH. ### Alcoholic Fermentation (Left Diagram) 1. **Conversion to Acetaldehyde**: - Pyruvate is first decarboxylated, releasing CO₂ and forming acetaldehyde. 2. **Conversion to Ethanol**: - Acetaldehyde accepts electrons from NADH, regenerating NAD+ and forming ethanol. Key Molecules: - **Pyruvate**: Intermediate from glycolysis. - **Acetaldehyde**: Formed after CO₂ release. - **Ethanol**: Final product of fermentation. ### Lactate Fermentation (Right Diagram) 1. **Lactate Formation**: - Pyruvate directly accepts electrons from NADH, regenerating NAD+ and forming lactate. Key Molecules: - **Pyruvate**: Intermediate from glycolysis. - **Lactate**: Final product of fermentation. ### Summary Both fermentation processes allow glycolysis to continue by regenerating NAD+ from NADH, enabling the production of ATP under anaerobic conditions. While alcoholic fermentation produces ethanol and CO₂, lactate fermentation produces lactate, without releasing CO₂.
Transcribed Image Text:## Fermentation Pathways: Alcoholic and Lactate Fermentation ### Glycolysis Overview Both charts illustrate the process beginning with glycolysis. In glycolysis, glucose (a 6-carbon molecule) is broken down into two molecules of pyruvate (a 3-carbon molecule each). During this process: - 2 ATP molecules are consumed. - 4 ATP molecules are produced, resulting in a net gain of 2 ATP. - 2 NAD+ molecules are reduced to 2 NADH. ### Alcoholic Fermentation (Left Diagram) 1. **Conversion to Acetaldehyde**: - Pyruvate is first decarboxylated, releasing CO₂ and forming acetaldehyde. 2. **Conversion to Ethanol**: - Acetaldehyde accepts electrons from NADH, regenerating NAD+ and forming ethanol. Key Molecules: - **Pyruvate**: Intermediate from glycolysis. - **Acetaldehyde**: Formed after CO₂ release. - **Ethanol**: Final product of fermentation. ### Lactate Fermentation (Right Diagram) 1. **Lactate Formation**: - Pyruvate directly accepts electrons from NADH, regenerating NAD+ and forming lactate. Key Molecules: - **Pyruvate**: Intermediate from glycolysis. - **Lactate**: Final product of fermentation. ### Summary Both fermentation processes allow glycolysis to continue by regenerating NAD+ from NADH, enabling the production of ATP under anaerobic conditions. While alcoholic fermentation produces ethanol and CO₂, lactate fermentation produces lactate, without releasing CO₂.
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