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

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

What does the primary structure of a protein refer to?

The arrangement of multiple polypeptide subunits in a protein complex

The local folding of the polypeptide chain into structures such as alpha-helices and beta-sheets

The three-dimensional folding pattern of the entire protein

The linear sequence of amino acids in the polypeptide chain

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the concept of protein structure. Proteins have four levels of structure: primary, secondary, tertiary, and quaternary. Each level describes a different aspect of the protein's organization.

Step 2: Define the primary structure of a protein. The primary structure refers to the linear sequence of amino acids in a polypeptide chain, connected by peptide bonds. This sequence is determined by the genetic code.

Step 3: Differentiate the primary structure from other levels of protein structure. Secondary structure involves local folding into alpha-helices and beta-sheets, tertiary structure describes the three-dimensional folding of the entire protein, and quaternary structure refers to the arrangement of multiple polypeptide subunits in a protein complex.

Step 4: Recognize that the primary structure is the foundation for all higher levels of protein structure. The sequence of amino acids determines how the protein will fold and function.

Step 5: Apply this knowledge to the problem. The correct answer is 'The linear sequence of amino acids in the polypeptide chain,' as this defines the primary structure of a protein.