Can You Explain The Lytic Life Cycle Present In Bacteriophage?


4 Answers

saima jabeen Profile
saima jabeen answered
Lytic cycle:  The bacteriophage replicates only inside the bacterial cell. The first step is the attachment of bacteriophage to host cell at receptor site on the bacterial cell wall. During this week chemical union between vision and receptor sites takes place. Second step is penetration in which the tail releases the enzyme lysozyme to digest a portion of the bacterial cell wall. The tail sheath contracts and tail core is forced into the cell through cell wall and cell membrane. The virus injects its DNA into the bacterial cell just as the syringe is used to inject the vaccine. The protein coat remains outside the cell.    Many animal viruses, however enter the host cell intact i.e., the entire virus penetrates the host cell by endocytosis.Immediately after entering the host cell, the viral DNA takes the control of the host's biosynthetic machinery and induces the host cell to synthesize necessary viral components (DNA, proteins0, and starts multiplying about 25 minutes. After initial infection, Approximately 200 new bacteriophages are formed with in the host cell. Now bacterial cell burst, i.e., it undergoes lysis. Newly formed phages are released to infect other bacteria and start another lytic cycle. The phage, which causes lysis of the host cell, is known as lytic or virulent phage.
Anonymous Profile
Anonymous answered
'Bacteriophage's are viruses that infect bacteria. Bacteriophage's have a protein "tail" attached to the capsid (protein coat that envelopes the genetic material), which is used to infect the host bacteria.'

Basicly what this means is, Bacteriophage's are a certain type of virus that only in ect bacterial cells.
Anonymous Profile
Anonymous answered
Bacteriophage is a virus that affect bacteria
Sudipa Sarkar Profile
Sudipa Sarkar answered
Bacteriophage is particular type of virus that targets and infects bacterial cells. However, the official invention of bacteriophage is considered to be in the hand of the French Canadian microbiologist Felix d' Herelle in 1915, but the initial observation of these types of micro-organisms was made during 1896 followed by observations made by the British bacteriologist Frederick Twort in 1913. The name bacteriophage was coined from the Greek word phago implying eat or eater. Several types of bacteriophage have been identified and the naming system of bacteriophage is made on the basis of similarity of the bacteria they are able to infect. For example, staphylophages infect staphylococcal bacteria and coliphages infect coliform bacteria.

The primary feature of phages is that they have the similar biological functions as other viruses, but they do not affect human cell. Bacteriophage has a great significance in the study of biotechnology. One of the essential applications of phages in biotechnology is the insertion of phages into human cell in order to treat bacterial infection. It was Felix d' Herelle's dream that is meant to be fulfilled through the development of modern technology by treating bacterial infection in human and animal cells. Bacteriophage has an important role in treating blood infection and meningitis.

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