
Cellular transport
Cellular transport refers to the ways in which substances move in and out of cells, vital for their functions and survival. There are two main types: passive and active transport. Passive transport occurs naturally without energy, while active transport requires energy to move substances against their concentration gradient. This process is crucial for nutrient uptake, waste removal, and maintaining balance within the cell. Examples include diffusion, where molecules spread out evenly, and endocytosis, where cells engulf larger molecules or particles. Overall, cellular transport ensures that cells receive what they need and dispose of what they don’t.