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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 are temperate phages?
Temperate phages are bacteriophages that can follow two replication pathways: lytic and lysogenic. In the lytic cycle, they infect a bacterial host and replicate rapidly, causing cell lysis. In the lysogenic cycle, they integrate their DNA into the host genome, replicating along with the host without causing immediate cell lysis.
What are two ways that phage can replicate in harmony with their host?
Phages can replicate in harmony with their host by entering a lysogenic cycle, where they integrate their DNA into the host genome and replicate passively with the host. Alternatively, phages can undergo a lytic cycle, where they replicate quickly and burst the host cell to release progeny phages without causing host cell death.
What does H pylori mean?
Helicobacter pylori is a type of bacteria that may infect around two-thirds of the people in the world. The H. in the name is short for Helicobacter so called because they are spiral in shape as in the word helicopter means spiral.
Woman giving head simultaniously to two guys at the same time Can his semen touching your penis during her giving oral infect you with aids Or does her saliva kill the virus if the other guy is infect?
saliva does not kill an aids virus.
What is the only two venomous lizard?
The only two venomous lizards are the Gila Monster and the Mexican Bearded Lizard. Many believe some monitors are poisonous, such as the Komodo Dragon, but they are not. They just have bad bacteria that can infect wounds and if not treated immediately, will kill.
Is strep throat contagious after you take 4 doses of antibiotics?
Strep throat is not probably contagious after two days therapy with effective antibiotics. But it takes complete ten days to eradicate the bacteria from the throats of all the patients. Untreated the bacteria will regain their ability to infect the next host in short period, probably.
Name two sorts of virus that can infect your airways?
pneumoria and the flu
Can we sex two or more girl can be infect by HIV?
yes for sure, the reason being usally while having sex with 2 or more at a time does not tend to change condoms
Name and compare the two groups of monerans?
The two groups of bacteria is, Blue-green Bacteria.
What are two antibiotics produced by bacteria?
Polymixin B and Bacitracin are the two antibiotics that are derived from the bacteria.
