Answer:
Alfred Hershey and Martha Chase
Explanation:
In 1952 Alfred Hershey and Martha Chase were working with bacteriophages or phages, which are viruses that infect bacteria. They knew that a phage had an outer shell of protein and an inner core of DNA. In addition, from the electron microscope observations, they also knew that during infection the virus attacks the bacterium by its tails and introduces its genetic material into the bacterium to multiply using its metabolic machinery. They radioactively labeled two sets of phages: one with 32P (which marks only DNA) and another with 35S (which marks only proteins). In two parallel experiments, they infected bacteria with viruses marked on their DNA and with viruses marked on their proteins. The cultures were shaken with a mixer to separate the virus particles from the bacterial coatings. They then performed a centrifugation to separate the phages from the bacteria, so that the larger and heavier bacteria remain in the pellet, while the phages remain in the supernatant. They found that the radioactivity of 35S appeared in the supernatant while that of 32P appeared in the sediment, from which new radioactively labeled virus particles appeared, demonstrating that DNA was the genetic material.
You will be able to recover from exercise when you are fit because your body can be more quick and agile and development more to the best of it's abilities it will be stronger and more effective to complete any activities . your body can use it's energy for more important matters instead of it turning into waste . because there will be nothing to hold your body back from using it's full potential.
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a. the Human Genome Project. HGP or Human Genome Project's goal is to sequence all chemical base pairs of the human DNA. </span>This scientific research project has revealed that there could be an approximate of 20,500 human genes.
I belive that the elements 1 through 92 occur naturally on Earth, except for elements 43 and 61, although these are only found in very limited concentrations. The elements mostly on the periodic table that accompany uranium are generated only chemically and are classified as transuranium or transuranic components.
Answer:
Food for the plant and the ground soil around the plant will get nutrients.
Explanation:
