What role does a pipette serve in scientific experiments?

A pipette serves as a droplet dispenser in scientific experiments, allowing for precise transfer of liquids in small volumes. Its design enables researchers to dispense controlled amounts of liquid, whether it be for measuring reagents, performing dilutions, or transferring samples. This accuracy is crucial in experiments where the concentration of solutions or the amount of reagents can significantly impact the results.

While the other options refer to different functions in scientific procedures—temperature measurement, microscopic observation, and providing support during experiments—they do not accurately describe the primary purpose of a pipette. In contrast, the unique functionality of the pipette in liquid handling positions it as an essential tool in laboratory practices.