What does the positive strand in double stranded RNA viruses stands for?
The positive-strand RNA may be used as messenger RNA (mRNA) which can be translated into viral proteins by the host cell’s ribosomes.
What is meant by positive and negative strand RNA viruses?
Positive-sense viral RNA is similar to mRNA and thus can be immediately translated by the host cell. Negative-sense viral RNA is complementary to mRNA and thus must be converted to positive-sense RNA by an RNA polymerase before translation.
How do you remember viral replication?
A mnemonic to remember the stages of virus replication is the sentence “A PURple Apple Might Redden.” The letters in bold are the first letters of the names of the seven stages in order. All viruses must perform the seven stages in order to create new virions.
Is influenza A negative or positive strand virus?
The influenza viruses are characterized by segmented, negative-strand RNA genomes requiring an RNA-dependent RNA polymerase of viral origin for replication. The particular structure of the influenza virus genome and function of its viral proteins enable antigenic drift and antigenic shift.
What is positive strand DNA?
An individual strand of DNA is referred to as positive-sense (also positive (+) or simply sense) if its nucleotide sequence corresponds directly to the sequence of an RNA transcript which is translated or translatable into a sequence of amino acids (provided that any thymine bases in the DNA sequence are replaced with …
What is the difference between positive and negative strand RNA?
What is positive-strand DNA?
What is the meaning of Ssdna?
Single stranded dna
Definition. A DNA molecule consisting of only a single strand contrary to the typical two strands of nucleotides in helical form. Supplement.
How do virions replicate?
Viruses cannot replicate on their own, but rather depend on their host cell’s protein synthesis pathways to reproduce. This typically occurs by the virus inserting its genetic material in host cells, co-opting the proteins to create viral replicates, until the cell bursts from the high volume of new viral particles.