transport in biological systems

Transport in biological systems involves the movement of substances like nutrients, gases, and waste products within an organism to support life processes. For example, blood carries oxygen and nutrients to cells and removes waste products like carbon dioxide. The circulatory system, including the heart and blood vessels, acts like a delivery network. At the cellular level, small molecules pass through cell membranes via diffusion or active transport, ensuring each cell gets what it needs to function properly. This efficient transport system maintains overall health and supports growth, energy production, and cellular activities.