After the virus enters the host cell, what event leads to the release of viral g
ID: 147897 • Letter: A
Question
After the virus enters the host cell, what event leads to the release of viral genome into the cytoplasm of the host cell ?Complementary RNA strands are made using the viral RNA as a template. What is the role or function of the complementary RNA in the viral infection of the host cell? After the virus enters the host cell, what event leads to the release of viral genome into the cytoplasm of the host cell ?
Complementary RNA strands are made using the viral RNA as a template. What is the role or function of the complementary RNA in the viral infection of the host cell?
Complementary RNA strands are made using the viral RNA as a template. What is the role or function of the complementary RNA in the viral infection of the host cell?
Explanation / Answer
1) After the virus enters the host cell, what event leads to the release of viral genome into the cytoplasm of the host cell ?
Viral replication is the development of viruses during the infection process in the target host cells. Viruses must first get inside the cell before viral replication start.
virus replication stages are as follows :
1)Attachment (Adsorption)
2) Penetration
3) Uncoating
4) Targeting
5) Gene expression.
>synthesis of viral mRNA (transcription)
>synthesis of viral proteins (translation)
6) Genome replication
7) Virion assembly/maturation
8) Release of new infectious virus
>lysis
>budding
Viral Genome Replication {viral genome replicates using the host's cellular machinery} leads to the release of viral genome into the cytoplasm of the host cell
Because of there small genome size (5 - 10 kb). Viral nucleic acid synthesis (genome replication) new virus genome are synthesized, templates are either the parental genome or with single stranded nucleic acid genomes, newly formed complementary strands. By a virus called polymerate or replicate in some DNA viruses by a cell enzyme. This is done in rapidly dividing cells.
2) complementarity : relationship between two structures each following the lock-and-key principle. complementarity is the base principle of DNA replication and transcription as it property shared between two DNA or RNA sequences.
Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes.
Reverse transcribing viruses replicate their genomes by reverse transcribing DNA copies from their RNA . These DNA copies are then transcribed to new RNA. Retrotransposons also unfurl by copying DNA and RNA from one another and telomerase contains an RNA that is used as template for building the eukaryotic chromosomes.
function :
RNA viruses divided into 2 types :
a)negative-sense
b)positive-sense, or ambisense RNA viruses.
divided according to the sense or polarity of their RNA .
It can bind with either DNA or another RNA through complementary base pairing.
Positive-sense viral RNA is similar to mRNA and translated by the host cell. Negative-sense viral RNA is complementary to mRNAwgich converted to positive-sense RNA by an RNA-dependent RNA polymerase before translation.purified RNA of a positive-sense virus can directly cause infection or less infectious than the whole virus particle. Purified RNA of a negative-sense virus is not infectious by itself it necessity to be transcribed into positive-sense RNA . virion can be transcribed to multiple positive-sense RNAs. Ambisense RNA viruses resemble negative-sense RNA viruses, they also translate genes from the positive strand.