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

Which level of protein structure corresponds to the formation of α-helices and β-pleated sheets?

Primary

Secondary

Tertiary

Quaternary

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Verified step by step guidance

Understand the four levels of protein structure: primary, secondary, tertiary, and quaternary.

The primary structure of a protein is its unique sequence of amino acids.

The secondary structure refers to the local folded structures that form within a polypeptide due to interactions between atoms of the backbone. The most common types are α-helices and β-pleated sheets.

The tertiary structure is the overall three-dimensional structure of a single protein molecule, formed by interactions between the side chains of the amino acids.

The quaternary structure is the structure formed by several protein molecules, usually called protein subunits, which function as a single protein complex.