How is nutrition defined in a biological context?

In a biological context, nutrition is fundamentally defined as the process by which the body takes in and uses food. This definition encompasses several key components, including the ingestion, digestion, absorption, and metabolism of nutrients.

When an organism consumes food, it breaks down the complex molecules into simpler forms that can be utilized by the body for various functions, such as energy production, growth, and repair of tissues. This includes processes such as the absorption of carbohydrates, proteins, fats, vitamins, and minerals, which are essential for maintaining health and supporting bodily functions.

Understanding nutrition in this manner highlights its critical role in various biological processes, making it clear why it is integral to overall health and well-being.