Measuring density. As cells enter new states, their molecular contents, including lipids, proteins, and nucleic acids, can become more or less crowded.

Learn about and revise density of materials and how to measure the density of various materials with GCSE Bitesize Physics. ... This is because the particles are tightly packed in both states.

Density is a characteristic property of a substance. The density of a substance is the relationship between the mass of the substance and how much space it takes up (volume). The mass of atoms, their ...

CAMBRIDGE, MA -- Measuring the density of a cell can reveal a great deal about the cell’s state. As cells proliferate, differentiate, or undergo cell death, they may gain or lose water and other ...