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Multiple Choice
Which of the following proteins is most abundant in human skin and provides structural strength?
A
Hemoglobin
B
Insulin
C
Actin
D
Collagen
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Verified step by step guidance
1
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.