Michigan Esthetician State Board Practice Exam

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Study for the Michigan Esthetician State Board Test. Utilize flashcards and multiple choice questions, each featuring hints and explanations. Prepare for success!

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Which nutrient plays a significant role in maintaining healthy cell membranes?

Proteins
Fats
Carbohydrates
Minerals

The correct answer is: Fats

Fats are crucial for maintaining healthy cell membranes due to their structural role as phospholipids. Cell membranes are primarily composed of a bilayer of phospholipids, which consist of hydrophilic (water-attracting) heads and hydrophobic (water-repelling) tails. The arrangement of these phospholipids creates a protective barrier that regulates the passage of substances in and out of the cell, ensuring cellular integrity and function. In addition to providing structural support, fats are also integral to membrane fluidity, which allows cells to communicate effectively and move substances across their membranes. This fluidity is essential for the proper functioning of proteins embedded in the membrane, such as receptors and transport proteins. While proteins, carbohydrates, and minerals have important functions in the body—such as building and repairing tissues, providing energy, and facilitating biochemical reactions—they do not primarily provide the structure necessary for maintaining cell membranes. This emphasizes the unique and pivotal role that fats play in cellular health.