Navigation Links
Lytic cycle


The lytic cycle is one of the two cycles of viral reproduction, the other being the lysogenic cycle. These cycles should not, however, be seen as discrete and separate, but rather as somewhat interchangeable. The lytic cycle is typically thought of as the main method of viral replication, since it results in the destruction of the infected cell, which is how viruses cause damage to their hosts.

Contents

Description

The lytic cycle is a three-stage process.

Infection

When a virus infects a cell, it first binds with the cell membrane using receptor molecules on the virus's surface. The virus then injects its genetic material, which can be either DNA or RNA, into the cell.

Growth

The viral nucleic acid takes over and uses the host cells organelles to make many copies of the virus. In the case of DNA viruses, the DNA transcribes itself into messenger RNA (mRNA) molecules that are then used to direct the ribosome. In retroviruses, or RNA viruses, a unique enzyme called reverse transcriptase transcribes the viral RNA into DNA, which is then transcribed again into mRNA.

Replication and lysis

After many virus copies are made, they are assembled into complete viruses. The cell eventually becomes filled with viruses (typically 100-200) until it bursts, or lyses; this end process gives the cycle its name. The new viruses are free to infect other cells.


'"/>


(Date:11/10/2014)... U.S. store shelves in early 2010, and people have ... packets can be tossed into a washing machine without ... The convenience, though, has come with risks for young ... Children,s Hospital found that from 2012 through 2013, U.S. ... than 6 years of age swallowing, inhaling, or otherwise ...
(Date:11/7/2014)... CORAL SPRINGS, Florida , November 6, 2014 ... improved secure authentication for better mobile security revolutionizing online transactions. ... NXTD ), Alibaba Holdings Ltd. (NYSE: BABA ), ... MSFT ), eBay Inc. (NASDAQ: EBAY ... (NASDAQ: NXTD and NXTDW), a biometric authentication ...
(Date:11/6/2014)... is an asset for a predator. Except when that predator ... tiger beetle, relative to its size, is the fastest creature ... body lengths per second (at about five miles per hour). ... take the sprinting gold from the tiger beetle, a person ... The tiger beetle has a problem. At peak speeds, everything ...
Breaking Biology News(10 mins):Study finds laundry detergent pods, serious poisoning risk for children 2Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 2Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 3Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 4Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 5Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 6The tiger beetle: Too fast to see 2
... in a virtual reality forest, will anyone hear an environmental message? ... cut down the make-believe redwood. New findings from Stanford researchers ... and told to saw through a towering sequoia until it crashed ... world than people who only imagined what it,s like to cut ...
... ST. LOUIS Saint Louis University researchers have identified ... fluid from tissues to lymphatic vessels. It may be possible ... organ to another organ and improve the effectiveness of vaccines. ... consisting of vessels in the body. It defends the body ...
... research by scientists at The Scripps Research Institute and collaborating ... that may provide a target for obesity and diabetes drugs. ... Cell Metabolism , the scientists describe a protein called ... signals that stimulate fat cell formation and turn off those ...
Cached Biology News:Stanford's virtual reality lab focuses on conservation 2Stanford's virtual reality lab focuses on conservation 3Outsmarting cancer cells: SLU scientists learn how they spread 2Scripps Research scientists find 'dual switch' regulates fat formation 2Scripps Research scientists find 'dual switch' regulates fat formation 3
Other biology definitionOther Tags