Molecular recognition is the process by which molecules interact selectively and specifically with one another. This interaction is crucial in various biological processes, such as enzyme-substrate binding and antibody-antigen recognition. The specificity of these interactions is often determined by the shape, size, and chemical properties of the molecules involved. In addition to biological systems, molecular recognition plays a significant role in fields like drug design and nanotechnology. Understanding how molecules recognize each other can lead to the development of new therapies and materials, enhancing our ability to create targeted treatments and innovative devices.