A free particle (photon, electron etc) is not restricted to discrete energy levels. Its wavelength and therefore energy can take any value. A plane wave, with any wavelength you choose, can satisfy the Schrodinger equation for a single free particle. A free particle does not have to have a single precise energy. For example, a wave packet (a quantum wave that moves along like a fizzy ball) in free space has a range of energies. A particle that is confined will have discrete energy levels. For example, an electron in orbit around a nucleus. So quantum mechanics does not always mean that energy or any other property is quantized.
Cell Passage. Cell passaging or splitting is a technique that enables an individual to keep cells alive and growing under cultured conditions for extended periods of time.Cells should be passed when they are 90%-100% confluent. Ethanol squirt bottle and kimwipes.ell passaging or splitting is a technique that enables an individual to keep cells alive and growing under cultured conditions for extended periods of time. Cells should be passed when they are 90%-100% confluent. Ethanol squirt bottle and kimwipes.
[ab-sorpÂ´shun] 1. the act of taking up or in by specific chemical or molecular action; especially the passage of liquids or other substances through a surface of the body into body fluids and tissues, as in the absorption of the end products of digestion into the villi that line the intestine.