Give two points of importance of osmosis.

Osmosis plays a vital role in maintaining cell turgidity and shape, which is especially critical in plant cells where the influx of water creates turgor pressure against the rigid cell wall, keeping plants upright, firm, and structurally sound. Without adequate turgor pressure maintained through osmosis, plants wilt and droop because their cells become flaccid. This same principle allows plant cells to perform growth movements and maintain the rigidity needed for leaves to capture sunlight efficiently and stems to support the plant body. In animal cells, osmosis regulates cell volume and prevents cells from bursting or shriveling by maintaining isotonic conditions through careful balance of water and solute concentrations.

Osmosis is essential for nutrient absorption and waste removal throughout living organisms. In the human digestive system, water absorption in the intestines occurs through osmosis, following the movement of nutrients and electrolytes that create favorable osmotic gradients. Similarly, in the kidneys, osmosis is fundamental to urine formation and concentration, allowing the body to conserve water when needed or eliminate excess water to maintain homeostasis. At the cellular level, osmosis facilitates the transport of water to all cells, ensuring they receive adequate hydration for metabolic processes while removing metabolic waste products dissolved in water, making it indispensable for survival and proper physiological function.