Viral Multiplication Flashcards
Enzymes for the reproduction of viruses comes from where?
the virus
enzymes needed for protein synthesis, ribosomes, tRNA, and energy production are supplied by what?
the host cell
how can virus multiplication be demonstrated?
by the one-step growth curve
what is an example of bacteria that undergo the lytic cycle?
T-even bacteriophages
what is the main difference between the lytic cycle and the lysogenic cycle?
the lytic cycle ends with the death of the host cell whereas the lysogenic the host cell remains alive
what are the steps of the lytic cycle?
Attachment, penetration, biosynthesis, maturation, and release
what is the attachment step of the lytic cycle?
the virus attaches to a complementary receptor site on a bacteria cell. this attachment is formed by weak hydrogen bonds
what is the penetration step in the lytic cycle?
the bacterial cell releases phage lysozyme which breaks down a portion of the bacterial cell wall and the DNA is released into the bacterial cell. the capsid remains on the outside.
what is the biosynthesis step of the lytic cycle?
once the bacteriophage DNA reaches the cytoplasm of the host cell the cell will stop protein synthesis for the host cell and starts directing synthesis of viral components by the host cell
what is the maturation step in the lytic cycle?
the viral components are assemeled into virons
what is the release step of the lytic cycles?
this is the release of the new viruses from the host cell. The host cell lysis which kills the cell
eclipse period
the period during viral multiplication before the components are assemebled
