The method by which cell components are separated by centrifugation at progressively higher speeds is called _______ centrifugation.
A) differential
B) velocity
C) density-gradient
D) equilibrium

Question

Quizplus · Accepted Answer

Differential centrifugation is the method by which cell components are separated by centrifugation at progressively higher speeds. This technique takes advantage of the differences in size, shape, and density of cellular components to isolate specific organelles and macromolecules. Velocity centrifugation involves separating components based on their sedimentation rate, which is not specific enough to isolate individual organelles. Density-gradient centrifugation is a more advanced technique that involves separating components based on their buoyant density, and equilibrium centrifugation involves reaching a state of equilibrium between the density of the sample and the density of the solution it is being centrifuged in. However, neither of these techniques is as commonly used as differential centrifugation for isolating cell components.

The Method by Which Cell Components Are Separated by Centrifugation