After allowing phages grown with bacteria in a medium that contained 32P and 35S, Hershey and Chase used a centrifuge to separate the phage ghosts from the infected cell. They then examined the infected cells and found that they contain , which demonstrated that is the phage genetic material.

Labeled DNA,   DNA

Explanation:

Harshey and Chase are the scientists who demonstrated that T2 phage has genetic materia which is known as DNA. They used 32P radioactive isotope to label the T2 phage DNA and 35S radioactive isotope used to label the T2 phage's proteins. Then they centrifuged the experiment samples to separate the phage ghosts from the infected cells. After centrifugation, they found that infected cells contained labeled DNA which confirms that DNA is the genetic material of phage.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.