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 NOT an example of a structural protein?

Keratin

Elastin

Collagen

Hemoglobin

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Verified step by step guidance

Step 1: Understand the concept of structural proteins. Structural proteins are responsible for providing support, strength, and shape to cells and tissues. Examples include keratin, elastin, and collagen, which are integral to the structure of skin, hair, connective tissues, and more.

Step 2: Review the function of each protein listed in the question. Keratin is a structural protein found in hair, nails, and skin. Elastin provides elasticity to tissues like skin and blood vessels. Collagen is a major structural protein in connective tissues, bones, and skin.

Step 3: Examine the function of hemoglobin. Hemoglobin is a globular protein found in red blood cells, primarily responsible for transporting oxygen throughout the body. It is not involved in providing structural support to tissues.

Step 4: Compare hemoglobin to the other proteins listed. Unlike keratin, elastin, and collagen, hemoglobin does not contribute to the physical structure or support of tissues. Its role is functional rather than structural.

Step 5: Conclude that hemoglobin is NOT a structural protein, as its primary role is oxygen transport rather than providing support or shape to tissues.