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

Proteins

Biochemistry

1. Introduction to Biochemistry

Proteins

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Multiple Choice

Polypeptides are assembled from which of the following building blocks?

Amino acids

Hexoses

Nucleotides

Glycerol

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Verified step by step guidance

Understand the structure of polypeptides: Polypeptides are chains of amino acids linked together by peptide bonds. They are the building blocks of proteins.

Review the chemical composition of amino acids: Amino acids consist of an amino group (-NH₂), a carboxyl group (-COOH), a hydrogen atom, and a unique side chain (R group) attached to a central carbon atom.

Eliminate incorrect options: Hexoses are sugars (e.g., glucose), nucleotides are the building blocks of nucleic acids (DNA and RNA), and glycerol is a component of lipids. None of these are involved in polypeptide assembly.

Confirm the correct answer: Amino acids are the building blocks used to assemble polypeptides through a process called translation, which occurs in the ribosome.

Conclude the reasoning: Polypeptides are formed by linking amino acids in a specific sequence dictated by the genetic code, making amino acids the correct answer.