How does the flu reproduce?
Influenza viruses replicate within the nucleus of the host cell. This uncommon RNA virus trait provides influenza with the advantage of access to the nuclear machinery during replication.
Is virus a lytic or lysogenic?
The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell. The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.
Are viruses living or nonliving?
Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.
Is influenza A lytic virus?
As a lytic virus, numerous influenza virus particles are released from the infected epithelia and macrophages (5, 9, 33).
How long can the flu last?
Symptoms usually appear from one to four days after exposure to the virus, and they last five to seven days. For people who’ve had a flu shot, the symptoms may last a shorter amount of time, or be less severe. For other people, the symptoms may last longer. Even when symptoms resolve, you may continue to feel fatigued.
How does the flu infect a human host?
When the influenza virus infects a host cell its goal is to produce many copies of itself that go on to attack even more cells. A viral enzyme, called polymerase, is key to this process. It both copies the genetic material of the virus and steers the host cell machinery towards the synthesis of viral proteins.
What do lytic and lysogenic have in common?
Both are mechanisms of viral reproduction. They take place within the host cell. The cycles produce thousands of copies of the original virus. Both lytic and lysogenic can moderate the DNA replication and the protein synthesis of the host cell.
What does the term lytic mean?
Definition of lytic
(Entry 1 of 2) : of or relating to lysis or a lysin also : productive of or effecting lysis (as of cells)
What is a lytic infection?
Infection of a bacterium by a bacteriophage with subsequent production of more phage particles and lysis, or dissolution, of the cell. The viruses responsible are commonly called virulent phages. Lytic infection is one of the two major bacteriophage–bacterium relationships, the other being lysogenic infection.
Is the flu part of the lytic cycle?
THE OUTCOME OF VIRAL INFECTION
(1) The cell may lyse or be destroyed. This is usually called a lytic infection and this type of infection is seen with influenza and polio.
Is hepatitis B lytic?
Notably, HBV does not directly kill the infected liver cell, as progeny virions are released in a non-lytic manner. Instead, much of its pathogenesis is related to immune responses of the host and to its genotoxic and oncogenic potential.