What did Hershey and Chase do quizlet?
What did Hershey and Chase do quizlet?
hershey and chase needed to confirm whether DNA or protein was the hereditary material. they did an experiment on viruses because a virus cannot reproduce without injecting its hereditary info into the host. So they labeled one phage with sulfur which is found in protein and one with phosphorous which is found in DNA.
What did the Hershey-Chase experiment demonstrate quizlet?
This showed that DNA was the genetic material that was passed down from the virus to a cell and thus DNA was the material that is passed from a cell to another cell.
What did Hershey and Chase experiment?
In their experiments, Hershey and Chase showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not. Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material.
What were the findings of Hershey and Chase’s experiments with bacteriophages select all that apply?
Hershey and Chase found that when bacteriophages containing 32P (radioactive), were allowed to infect nonradioactive bacteria, all the infected cells became radioactive and, in fact, much of the radioactivity was passed on to the next generation of bacteriophages.
Why did Hershey and Chase use bacteriophages quizlet?
Why did Hershey and Chase label the viral DNA with radioactive phosphorus and not radioactive sulfur? Hershey and Chase studied bacteriophages which are viruses that attack bacteria. They labeled the bacteriophage with radioactive isotopes to see where it goes when a virus attacks.
Why was it important to use a bacteriophage in the Hershey-Chase experiment rather than an animal virus?
Why was it important to use a bacteriophage in the Hershey-Chase experiment rather than an animal virus? A bacteriophage was used instead of an animal cell because the phage DNA makes multiple copies of itself using the host machinery, and eventually the host cell bursts, releasing a large number of bacteriophages.
What virus did Hershey and Chase start with?
In 1952, Alfred Hershey and Martha Chase published a convincing demonstration that DNA (not protein) was the genetic material. The Hershey–Chase experiment was carried out with a virus, called bacteriophage T2, that infects bacteria. Bacteriophage T2 consists of little more than a DNA core packed inside a protein coat.
What was Chase and Hershey’s conclusion?
Hershey and Chase concluded that protein was not genetic material, and that DNA was genetic material.
What are the 3 roles of DNA?
DNA now has three distinct functions—genetics, immunological, and structural—that are widely disparate and variously dependent on the sugar phosphate backbone and the bases.
What is are the conclusion of blender’s experiment?
1952: Geneticists Alfred Hershey and Martha Chase publish the findings of their so-called blender experiments, which conclude that DNA is where life’s hereditary data is found.
Why did Hershey and Chase use a blender?
They infected one sample with radioactive phosphorus-labeled phages, and the other sample with radioactive sulfur-labeled phages. Then, they stirred each sample in a Waring Blender, which was a conventional kitchen blender. They used a blender because centrifuges spun too fast and would destroy the bacterial cells.
What are the 3 key roles of DNA?
Three roles of the DNA molecule in heritage are in storage, copying and transmitting genes. Every cell contains DNA, where is the complete genetic material stored.