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

3. Amino Acids

Essential Amino Acids

Biochemistry

3. Amino Acids

Essential Amino Acids

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Multiple Choice

Which of the following best describes the difference between essential and nonessential amino acids?

Essential amino acids cannot be synthesized by the human body and must be obtained from the diet, while nonessential amino acids can be synthesized by the body.

Essential amino acids are used exclusively for energy production, while nonessential amino acids are used for protein synthesis.

Essential amino acids contain sulfur atoms, while nonessential amino acids do not.

Essential amino acids are only found in plant-based foods, while nonessential amino acids are found in animal-based foods.

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Verified step by step guidance

Understand the definition of essential amino acids: These are amino acids that the human body cannot synthesize on its own and must be obtained through dietary sources.

Understand the definition of nonessential amino acids: These are amino acids that the human body can synthesize internally, meaning they do not need to be obtained from the diet.

Evaluate the first option: 'Essential amino acids cannot be synthesized by the human body and must be obtained from the diet, while nonessential amino acids can be synthesized by the body.' This aligns with the definitions provided above.

Analyze the second option: 'Essential amino acids are used exclusively for energy production, while nonessential amino acids are used for protein synthesis.' This is incorrect because both types of amino acids are involved in protein synthesis, and energy production is not exclusive to essential amino acids.

Review the remaining options: 'Essential amino acids contain sulfur atoms, while nonessential amino acids do not' and 'Essential amino acids are only found in plant-based foods, while nonessential amino acids are found in animal-based foods.' Both are incorrect because essential amino acids are not defined by sulfur content or food source; they are defined by the body's inability to synthesize them.