Final Answer:
A high-speed centrifugation of CsCl generates a density gradient.
Step-by-step explanation:
When CsCl is subjected to high-speed centrifugation, it forms a density gradient in the centrifuge tube. This process exploits the principle that particles in a fluid experience buoyant forces that depend on the density of the medium. As the centrifuge spins rapidly, CsCl particles separate based on their densities, forming a gradient within the tube. This gradient allows for the isolation and separation of biological molecules, such as DNA or RNA, based on their buoyant densities. The dense CsCl settles at the bottom, creating distinct bands that can be carefully extracted, providing a highly purified sample of the biomolecule of interest.