The number of cells in the different phases of a population can be determined most easily by using a _______ to measure the amount of DNA per cell in a large sample of cells.
A) scintillation counter
B) flow cytometer
C) fluorescence microscope
D) phase-contrast microscope after autoradiography

Question

Quizplus · Accepted Answer

Flow cytometers are able to measure the amount of DNA per cell in a large sample of cells, allowing for determination of the number of cells in different phases of the cell cycle. Scintillation counters are used to measure radioactive decay, fluorescence microscopes are used to visualize fluorescently labeled molecules, and phase-contrast microscopes after autoradiography are used to visualize cells that have been labeled with a radioactive probe.

The Number of Cells in the Different Phases of a Population