Which is incorrect about Hershey and Chase experiment?
∗ Viruses grown in the presence of radioactive phosphorus contained radiactive DNA but not radioactive protein because DNA contains phosphorus but protein does not.
Which of the following is the most important reason Hershey and Chase chose to use bacteriophages in their experiments?
Bacteriophages were used because they contain little more than DNA and protein. Alfred Hershey and Martha Chase used the bacteriophages because of their connection to DNA. In one batch, the phages (short for bacteriophages) were grown with radioactive phosphorous, which means it was incorporated into phage DNA.
Which of the following is correct about Hershey-Chase experiment?
They discovered that the protein from the virus entered the cell, while the DNA stayed behind. They determined that infected bacteria contained tags from the virus’s DNA. -is correct about the Hershey-Chase experiment.
What are viruses that attack bacteria called?
The viruses that infect bacteria are called bacteriophages, and certain bacteriophages have been studied in detail in the lab (making them some of the viruses we understand best).
Can a virus kill a bacteria?
Bacteriophages, known as phages, are a form of viruses. Phages attach to bacterial cells, and inject a viral genome into the cell. The viral genome effectively replaces the bacterial genome, halting the bacterial infection.
Can viruses be killed with antibiotics?
Antibiotics cannot kill viruses or help you feel better when you have a virus. Bacteria cause: Most ear infections. Some sinus infections.
Why do antibiotics not work against viruses quizlet?
Taking too many antibiotic drugs can cause your body to develop a resistance to the drugs. Why do antibiotic drugs not work against viruses? Antibiotic drugs attack the parts of bacteria that viruses do not have, such as a cell wall. Since viruses do not have a cell wall, the antibiotic cannot affect it.
Why Antibiotics are used to treat bacterial but not viral diseases?
Antibiotics are useless against viral infections. This is because viruses are so simple that they use their host cells to perform their activities for them. So antiviral drugs work differently to antibiotics, by interfering with the viral enzymes instead.
Why virus Cannot be killed by antibiotics?
Viruses don’t have cell walls that can be attacked by antibiotics; instead they are surrounded by a protective protein coat. Unlike bacteria, which attack your body’s cells from the outside, viruses actually move into, live in and make copies of themselves in your body’s cells.
Why do doctors give antibiotics for viral infections?
In complicated or prolonged viral infections, bacteria may invade as well, and cause what is known as a “secondary bacterial infection”. In these cases, your doctor may prescribe an antibiotic, if one is needed, to kill the specific invading bacteria.