Biology STAAR (State of Texas Assessments of Academic Readiness) Practice Test

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Test your knowledge for the Biology STAAR Exam. Prepare with interactive quizzes, explore detailed questions with solutions, and enhance your understanding to excel!

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How does melanin help the skin?

It increases vitamin D absorption
It provides moisture
It protects the skin from UV damage
It allows for quicker healing

The correct answer is: It protects the skin from UV damage

Melanin is a pigment produced by specialized skin cells known as melanocytes, and its primary role in the skin is to provide protection from ultraviolet (UV) radiation. By absorbing UV light, melanin reduces the risk of DNA damage that can lead to skin cancer and other skin disorders. This protective function is particularly important because UV radiation can cause oxidative stress and inflammation, which contribute to skin aging and damage. Individuals with higher levels of melanin typically have darker skin, which offers better natural protection against the harmful effects of UV rays. While melanin contributes to the coloration of the skin and may influence other aspects of skin health, its most significant benefit is its role in safeguarding skin cells from the potentially damaging effects of UV exposure.