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 of the following best describes a primary function of proteins in biological systems?

They act as catalysts for biochemical reactions.

They are the primary structural component of cell membranes.

They serve as the main energy currency of the cell.

They store genetic information.

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Verified step by step guidance

Understand the primary functions of proteins in biological systems. Proteins are versatile macromolecules that play critical roles in various biological processes.

Recall that one of the most important functions of proteins is their role as enzymes. Enzymes are specialized proteins that act as catalysts, speeding up biochemical reactions without being consumed in the process.

Eliminate incorrect options by analyzing their relevance to protein functions: Proteins are not the main energy currency of the cell (this role is fulfilled by ATP), nor do they store genetic information (this is the role of DNA and RNA).

Consider the structural role of proteins. While proteins contribute to the structure of cell membranes, this is not their primary function. Lipids are the main structural component of cell membranes.

Conclude that the best description of a primary function of proteins is their role as catalysts for biochemical reactions, which is essential for maintaining life processes.