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What did hershey and chase discover after the p-labeled phages infected the bacteria most of the radioactive phosphorous found in the layer containing?
Hershey and Chase discovered that after the P-labeled phages infected the bacteria, most of the radioactive phosphorus was found in the viral DNA, while little to no radioactive sulfur (used to label protein) was found. This confirmed that genetic material, not protein, is responsible for heredity in viruses.
Describe the experimental design that allowed Hershey and Chase to distinguish between the two options for genetic material?
Hershey and Chase knew that the particular phage they worked with has two basic components: DNA on the inside, coated with protein on the outside. In their expt theylabelled phages with radioisotopes . For one batch of infecting phages, they used a radioactive isotope of sulfur to label only the phages' protein coats.In another batch of phages, they used a radioactive isotope of phosphorus to label only DNA. Next, they allowed each batch of phages to infect separate cultures of nonradioactive bacterial cells. They then whirled each culture in a blender to shake loose any parts of the phages that remained outside the bacterial cells. Result of expt. confirmed that only DNA of phage entered bacteria .
What is a virulent phages?
phages of virulent.
What did Hershey and chase find through their experiment with infected bacteria?
The genetic mateial is made of DNA and not of proteins
When was Phages - EP - created?
Phages - EP - was created in 2006.
Can two phages infect bacteria at a time?
It can be.in this way we can obtain new phages thah share genes of bpth phages.
What do you call a bacteriophage when it is in a lysogenic cycle?
Phages that replicate only via the lytic cycle are known as virulent phages while phages that replicate using both lytic and lysogenic cycles are known as temperate phages.
Why did Hershey and Chase grow viruses in cultures that contained both radioactive Sulfur. What might have happened if they had used only one radioactive substance.?
Hershey and Chase used radioactive Sulfur to label viral proteins, as proteins contain sulfur. By growing the viruses in a culture containing both radioactive Sulfur and Phosphorus, they could differentiate between viral proteins (labeled with Sulfur) and viral DNA (labeled with Phosphorus). If they had only used one radioactive substance, they would not have been able to determine the specific molecule (protein or DNA) that the virus injected into the host cell.
What are the phages called that are capable of using both modes of reproduction?
Phages that are capable of using both the lytic and lysogenic modes of reproduction are called temperate phages. In the lysogenic mode, temperate phages integrate their DNA into the host genome, while in the lytic mode, they replicate and cause cell lysis.
How virtulent phages can multiply?
Virulent (virtulent) phages multiply by first attaching itself to a host cell and then absorbing it. Next, it injects its own DNA and the host eventually bursts and more phages present.
What does the filamentous phages contain?
Comal oligists
A bacterium attacked by T2 and T4 phages?
solo
