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

4. Protein Structure

Primary Structure of Protein

Biochemistry

4. Protein Structure

Primary Structure of Protein

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Multiple Choice

Which of the following determines the primary structure of a protein?

The arrangement of alpha helices and beta sheets

The association of multiple polypeptide chains

The overall three-dimensional shape of the protein

The sequence of amino acids linked by peptide bonds

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Verified step by step guidance

Understand the concept of protein structure: Proteins have four levels of structure—primary, secondary, tertiary, and quaternary. The primary structure refers to the linear sequence of amino acids in a polypeptide chain, linked by peptide bonds.

Recognize that peptide bonds are covalent bonds formed between the carboxyl group of one amino acid and the amino group of another during protein synthesis.

Differentiate the primary structure from other levels: Secondary structure involves local folding patterns like alpha helices and beta sheets, tertiary structure refers to the overall 3D shape, and quaternary structure involves the interaction of multiple polypeptide chains.

Identify that the sequence of amino acids in the primary structure is determined by the genetic code in the DNA, which is transcribed into mRNA and translated during protein synthesis.

Conclude that the primary structure is the foundation for all higher levels of protein structure, as the sequence of amino acids dictates how the protein will fold and function.