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Q9: Which of the following processes are decreased by ethanol consumption? Cytosol Mitochondrion A. PATHWAY 1. major pathway of ethanol metabolism NAD* NADH + H* NAD* NADH + H* in the liver CH,-CH,-OH ADH + CH,-C=O CH;-C-OH + H-O-H ALDH ETHANOL ACETALDEHYDE АСЕТАТЕ WATER B. PATHWAY 2 microsomal ethanol CYP2E1 oxidizing system (MEOS) NADPH + H* + O2 NADP* + 2H,O Excess alcohol consumption increases the NADH:NAD* ratio in the cytosol of hepatocytes.

Q9: Which of the following processes are decreased by ethanol consumption? Cytosol Mitochondrion A. PATHWAY 1. major pathway of ethanol metabolism NAD* NADH + H* NAD* NADH + H* in the liver CH,-CH,-OH ADH + CH,-C=O CH;-C-OH + H-O-H ALDH ETHANOL ACETALDEHYDE АСЕТАТЕ WATER B. PATHWAY 2 microsomal ethanol CYP2E1 oxidizing system (MEOS) NADPH + H* + O2 NADP* + 2H,O Excess alcohol consumption increases the NADH:NAD* ratio in the cytosol of hepatocytes.

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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Q9: Which of the following processes are decreased by ethanol consumption?
Transcribed Image Text:Q9: Which of the following processes are decreased by ethanol consumption?
Cytosol Mitochondrion A. PATHWAY 1. major pathway of ethanol metabolism NAD* NADH + H* NAD* NADH + H* in the liver CH,-CH,-OH ADH + CH,-C=O CH;-C-OH + H-O-H ALDH ETHANOL ACETALDEHYDE АСЕТАТЕ WATER B. PATHWAY 2 microsomal ethanol CYP2E1 oxidizing system (MEOS) NADPH + H* + O2 NADP* + 2H,O Excess alcohol consumption increases the NADH:NAD* ratio in the cytosol of hepatocytes.
Transcribed Image Text:Cytosol Mitochondrion A. PATHWAY 1. major pathway of ethanol metabolism NAD* NADH + H* NAD* NADH + H* in the liver CH,-CH,-OH ADH + CH,-C=O CH;-C-OH + H-O-H ALDH ETHANOL ACETALDEHYDE АСЕТАТЕ WATER B. PATHWAY 2 microsomal ethanol CYP2E1 oxidizing system (MEOS) NADPH + H* + O2 NADP* + 2H,O Excess alcohol consumption increases the NADH:NAD* ratio in the cytosol of hepatocytes.
Expert Solution
Step 1

In the human body, three steps are involved in alcohol metabolism.

  1. Ethanol is oxidized to acetaldehyde in the first step by the alcohol dehydrogenase enzyme.
  2. In the second step, the aldehyde dehydrogenase enzyme is used to convert acetaldehyde to acetate.
  3. The acetate is converted to acetyl CoA in the third step.
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