Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

29. Amino Acids

Proteins and Amino Acids

Organic Chemistry

29. Amino Acids

Proteins and Amino Acids

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Multiple Choice

Which of the following statements best describes a complete protein?

A protein that contains all essential amino acids in adequate amounts.

A protein that is synthesized exclusively in the human body.

A protein that is composed entirely of non-essential amino acids.

A protein that is derived only from plant sources.

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Verified step by step guidance

Understand the concept of a complete protein: A complete protein is one that contains all the essential amino acids in adequate amounts. Essential amino acids are those that the human body cannot synthesize on its own and must be obtained through diet.

Identify the essential amino acids: There are nine essential amino acids that must be present in a complete protein. These include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

Evaluate the given options: Analyze each statement to determine which one correctly describes a complete protein. The statement should reflect the presence of all essential amino acids in sufficient quantities.

Consider the synthesis and source of proteins: Proteins synthesized exclusively in the human body or composed entirely of non-essential amino acids do not meet the criteria for complete proteins. Similarly, proteins derived only from plant sources may not always be complete unless they contain all essential amino acids.

Select the correct statement: Based on the understanding of complete proteins, choose the statement that accurately describes a protein containing all essential amino acids in adequate amounts.