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

1. Introduction to Biochemistry

Entropy

Biochemistry

1. Introduction to Biochemistry

Entropy

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Multiple Choice

How does the entropy change with the following reaction?

Entropy decreases.

Entropy increases.

Entropy stays the same.

Impossible to tell. Needs more information.

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Verified step by step guidance

Identify the reaction: The given reaction is the synthesis of ammonia from nitrogen and hydrogen gases: N2(g) + 3 H2(g) → 2 NH3(g).

Count the number of moles of gas on each side of the reaction: On the reactant side, there are 1 mole of N2 and 3 moles of H2, totaling 4 moles of gas. On the product side, there are 2 moles of NH3.

Compare the number of moles of gas: The reaction goes from 4 moles of gas (reactants) to 2 moles of gas (products).

Understand the concept of entropy: Entropy is a measure of disorder or randomness. In general, a decrease in the number of gas molecules indicates a decrease in entropy because gases have higher entropy than liquids or solids due to their greater freedom of movement.

Conclude the change in entropy: Since the number of gas molecules decreases from 4 to 2, the entropy of the system decreases during this reaction.