What is an effect of buffers on biological processes?

Buffers play a crucial role in maintaining the stability of pH levels within biological systems. They are solutions that can resist changes in pH when small amounts of acids or bases are added. In the context of cells, this is vital because many biochemical reactions occur within a narrow pH range, and even slight fluctuations can affect enzyme activity, metabolic processes, and overall cellular function.

By stabilizing pH, buffers help to ensure that the environment remains conducive to the necessary biological processes, allowing enzymes to function properly and maintaining homeostasis. This stabilization is critical for metabolic pathways, cellular respiration, and overall cellular health.

The other options do not accurately reflect the role of buffers. Buffers do not inherently increase acidity, nor do they solely affect temperature or change the cellular composition. Their primary function is to moderate pH levels, making the chosen answer the most accurate representation of their effect in biological processes.