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What attaches to the bacteria and injects the hereditary material?
A bacteriophage. A virus that lands on the bacteria and injects the genetic material. Often, T even phages. ( T-2 and T-4 phages )
Why bacteriophage transfer only DNA or RNA into a bacteria but not the protein?
phages can range from 50nm to 200nm.This dimension dont favorizied virused to enty intairlly into their host bacteria.Cell wall of bacteria it is composed of peptidoglycan a glicoprotein that it protect bacteria again enviromental stress and agents.For this reason phages have evolved to inject their genome to the host bacteria.
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 .
How do phages reproduce?
Bacteria reproduce by a process known as binary fission, while eukaryote such as animal cells, reproduce by mitosis. In binary fission one bacterium slowly separates into two bacteria which then also divide and the life cycle continues as this process repeats over and over.bacteria DNA starts to separate into two different parts then it separates completely and there are two different cells.Bacteria reproduces through a process known as binary fission.
What did hershey and chase discover after the p-labeled phages infected the bacteria most of the radioactive phosphorous found in the layer containing?
it was phage
What attaches to the bacteria and injects the hereditary material?
A bacteriophage. A virus that lands on the bacteria and injects the genetic material. Often, T even phages. ( T-2 and T-4 phages )
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.
How are the lytic cycle and lysogenic cycl diffrent?
Phages have lytic or lysogenic cycle to reproduce themself.Phages that have lytic life cycle it kill bacteria after new progenicy of phages are relaset from host bacteria.Phages with lysogenic cyclel it integrate their DNA to the host bacteria.However, when bacteria that carry genetic material of lysogenic phages are posed to stress can switch to the lytitic cycle to produce a new progeny of pahages.
How did Hershey and Chase separate the phages from the bacteria?
Blender
What is a prophage-?
Genetic material of a bacteriophage , joined into the genome of a bacterium and able to produce phages if activated
Hershey and chase removed the phages from the surface of the bacteria by using?
They tore of the surface of the surfaces of the bacteria with the help of a blender.
Why bacteriophage transfer only DNA or RNA into a bacteria but not the protein?
phages can range from 50nm to 200nm.This dimension dont favorizied virused to enty intairlly into their host bacteria.Cell wall of bacteria it is composed of peptidoglycan a glicoprotein that it protect bacteria again enviromental stress and agents.For this reason phages have evolved to inject their genome to the host bacteria.
What is meant by germs even get germed?
Bacteria can be attacked by viruses called bacteriophages or somtimes just 'phages.
What is a virulent phages?
phages of virulent.
What are three ways bacteria may win the battle against the phages?
-natural selection -restriction enzymes -lysogeny
What did Hershey and chase find through their experiment with infected bacteria?
The genetic mateial is made of DNA and not of proteins
Can virus get a bacteria?
Yes- Bacterial viruses are called bacteriophages. Some examples are T4 and T7 phages. They are complex DNA viruses that attach themselves to the cell surface and then inject their DNA to the inside of the bacteria. Bacteria have enzymes called restriction enzymes that cleave DNA at specific sites called restriction sites. These enzymes are the bacterium's defense against phages.
