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 proteins is most abundant in human skin and provides structural strength?

Hemoglobin

Insulin

Actin

Collagen

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Verified step by step guidance

Step 1: Understand the role of proteins in the human body. Proteins are macromolecules that perform a variety of functions, including structural support, enzymatic activity, and transport. In this case, we are focusing on structural proteins in the skin.

Step 2: Review the function of each protein listed in the question. Hemoglobin is a protein responsible for oxygen transport in the blood, insulin is a hormone that regulates blood sugar levels, and actin is involved in cell movement and cytoskeletal structure. None of these are primarily associated with structural strength in the skin.

Step 3: Learn about collagen. Collagen is the most abundant protein in the human body and is a key structural component of connective tissues, including skin, tendons, and ligaments. It provides tensile strength and elasticity to the skin.

Step 4: Relate collagen to the structural strength of the skin. Collagen fibers form a network in the dermis layer of the skin, giving it resilience and the ability to withstand mechanical stress.

Step 5: Conclude that collagen is the correct answer based on its abundance and role in providing structural strength to the skin.