Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

6. Enzymes and Enzyme Kinetics

Enzymes

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzymes

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Multiple Choice

Alcohol dehydrogenase (ADH) converts alcohol in the liver. What type of biomolecule is ADH?

A lipid involved in membrane synthesis

A structural protein that provides support to liver cells

An enzyme that catalyzes the oxidation of ethanol to acetaldehyde

A carbohydrate that stores energy

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Verified step by step guidance

Understand the role of Alcohol Dehydrogenase (ADH): ADH is a biomolecule that facilitates the conversion of ethanol (alcohol) into acetaldehyde in the liver. This process is a chemical reaction, which suggests that ADH is involved in catalysis.

Recall the definition of an enzyme: Enzymes are proteins that act as biological catalysts, speeding up chemical reactions without being consumed in the process. They are highly specific to the reactions they catalyze.

Eliminate incorrect options: ADH is not a lipid, as lipids are primarily involved in energy storage and membrane synthesis. It is not a structural protein, as structural proteins provide support and shape to cells rather than catalyzing reactions. It is also not a carbohydrate, as carbohydrates are primarily involved in energy storage and structural functions.

Confirm the correct classification: Since ADH catalyzes the oxidation of ethanol to acetaldehyde, it fits the definition of an enzyme. Enzymes are proteins that facilitate biochemical reactions, and ADH specifically catalyzes this oxidation reaction in the liver.

Conclude that ADH is an enzyme: Based on its function and the elimination of other options, ADH is classified as an enzyme that catalyzes the oxidation of ethanol to acetaldehyde.