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

An organic nutrient that cannot be synthesized by the organism and must be provided in the diet is called a/an:

essential amino acid

fatty acid

peptide bond

nonessential amino acid

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Verified step by step guidance

Step 1: Begin by understanding the definition of an organic nutrient. Organic nutrients are compounds containing carbon that are essential for life and are typically obtained from food.

Step 2: Recognize the key phrase in the problem: 'cannot be synthesized by the organism and must be provided in the diet.' This indicates that the nutrient is essential for the organism's survival but cannot be produced internally.

Step 3: Review the options provided: essential amino acid, fatty acid, peptide bond, and nonessential amino acid. Eliminate peptide bond, as it is a chemical bond and not a nutrient. Similarly, nonessential amino acids can be synthesized by the organism, so they do not fit the criteria.

Step 4: Compare the remaining options: essential amino acid and fatty acid. Essential amino acids are organic nutrients that cannot be synthesized by the organism and must be obtained through the diet. Fatty acids can also be essential, but the term 'essential amino acid' is more specific to the definition provided in the question.

Step 5: Conclude that the correct answer is 'essential amino acid,' as it directly matches the description of an organic nutrient that must be provided in the diet and cannot be synthesized by the organism.