Virulent or lytic cycle:
Intra cellular multiplication of the phage finishes in the lysis of the host bacterium and the discharge of progeny virions. The replication of a virulent phage occurs in the stages shown below:
Figure: Lysogenic and Lytic cycle of a phage
1. Adsorption:
The attachment of phage to the surface of susceptible bacteria by means of its tail is termed as adsorption. Host specificity of the phage is found out in the adsorption stage of the cycle itself. Artificial injection through direct injection of phage DNA can be attained even in strains of bacteria which are not susceptible to the phage. The infection of bacteria by the naked phage nucleic acid is termed as transfection.2. Penetration:
The procedure of penetration resembles injection via a syringe. The phage DNA is injected into the bacterial cell via the hollow core. Subsequent to penetration the empty head and the tail of the phage stay outside the bacterium as the shell.3. Synthesis of phage components:
During this phase synthesis of bacterial protein, RNA, and DNA ceases. On other hand, phage DNA, head protein and tail protein are synthesized independently in the bacterial cell. The DNA is closely ‘packaged’ inside the polyhedron head and at last the tail structures are added.4. Maturation:
The assembly of phage components into mature infectious phage particle is termed as Maturation.5. Release of phages:
Discharge of phages typically occurs by the lysis of the bacterial cell. During the duplication of phages, the bacterial cell wall is destabilized and it supposes a spherical shape and at last burst or lyse. Mature daughter phages are discharged.
Latest technology based Biology Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Viruses homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Viruses, project ideas and tutorials. We provide email based Viruses homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Viruses. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Viruses. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
tutorsglobe.com elements of debtors management assignment help-homework help by online debtor management tutors
Gnathostomata tutorial all along with the key concepts of Features of Superclass Gnathostomata, Characteristics of Class Placodermi, Cartilaginous fishes and Features of Class Osteichthyes
tutorsglobe.com rain water harvest through open wells assignment help-homework help by online collection of rainwater from terrace tutors
tutorsglobe.com sewage treatment and disposal assignment help-homework help by online air pollution tutors
herbarium is a collection of pressed, dried plant specimens that mounted on particular sheets, recognized and arranged in the order of an accepted and familiar system of classification.
Zoogeography tutorial all along with the key concepts of Concept of Zoogeography, Zoogeographic Regions, Palaearctic Region, Nearctic Region, Neotropical Region, Fauna of Ethiopia Region
tutorsglobe.com etiology assignment help-homework help by online lyme disease tutors
Switched Mode Power Supply tutorial all along with the key concepts of Switched-mode power supply operation, Rectifier, filter and inverter, Converter and output rectifier, Drawbacks of switched mode power supplies, switched-mode power supply
bogged down with tough academic task? avail oscillation and waves assignment help and score well at competitive prices!
tutorsglobe.com absorption and assimilation assignment help-homework help by online the small intestine tutors
Avail our quality driven Modern Physics Assignment Help at best prices with 24x7 apt tutors to score maximum grades.
Fungi morphology tutorial all along with the key concepts of Unicellular Forms, Yeast, Slime Moulds, Cellular type, Plasmodial type, Filamentous Forms and Pseudoparenchymatous Forms
theory of introduction to cpm / pert techniques, cpm/pert or network analysis is the technique is at times called, developed with two parallel streams, one military and the other industrial.
Mosses tutorial all along with the key concepts of General features of Mosses, Classification of Mosses, Reproduction in Moss and Economic significance of Mosses
In digital circuits, a flip-flop is a word that considering to an electronic circuit (a bistable multivibrator) which has two stable states and thus is able of serving as one bit of memory.
1958748
Questions Asked
3689
Tutors
1477657
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!