Free radicals are highly reactive molecules with unpaired electrons that play a "double-edged" role in biology: they are essential for life-sustaining processes like cellular signaling and immune defense, yet they can also cause significant cellular damage when their levels become unregulated.
: Free radicals are atoms or molecules with one or more unpaired electrons in their outer shell. Free radicals in biology and medicine
Below is an outline and key content for a paper on . 1. Introduction Free radicals are highly reactive molecules with unpaired
: Biological systems rely on a delicate balance. While high levels lead to oxidative stress , low to moderate levels are crucial for physiological functions. 2. Sources and Formation 3. Key Reactive Species
: Primarily generated in the mitochondria during energy production, but also by phagocytes during immune responses and through metabolic pathways like those involving transition metals (iron, copper).
: Triggered by environmental factors such as UV radiation, air pollution, cigarette smoke, and certain medications. 3. Key Reactive Species