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 is the most accurate statement regarding the functions of proteins?

Proteins serve as enzymes, structural components, transporters, and play roles in cell signaling.

Proteins function exclusively as hormones in biological systems.

Proteins are primarily used for long-term energy storage in cells.

Proteins are the main genetic material in all living organisms.

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Verified step by step guidance

Understand the role of proteins in biological systems: Proteins are versatile macromolecules that perform a wide range of functions, including acting as enzymes, structural components, transporters, and signaling molecules.

Evaluate the first statement: Proteins serve as enzymes, structural components, transporters, and play roles in cell signaling. This is accurate because proteins are involved in catalyzing biochemical reactions, providing structural support (e.g., collagen), transporting molecules (e.g., hemoglobin), and facilitating communication between cells (e.g., insulin).

Analyze the second statement: Proteins function exclusively as hormones in biological systems. This is incorrect because proteins have diverse functions beyond hormones, such as enzymatic activity and structural roles.

Examine the third statement: Proteins are primarily used for long-term energy storage in cells. This is incorrect because lipids, not proteins, are the primary molecules used for long-term energy storage.

Review the fourth statement: Proteins are the main genetic material in all living organisms. This is incorrect because DNA and RNA are the main genetic materials, not proteins.