What blocks viral replication?

Answer 1

RNAi, restriction enzymes

RNAi
RNAi is short for RNA interference. During RNAi small RNA molecules, miRNA or siRNA, are used to form a complex which is complementary to the viral/foreign RNA. These RNA (both siRNA and miRNA) bind to mRNA from the virus, thus creating double stranded RNA. This dsRNA is then recognized by the RISC loading complex. This complex will make sure that the mRNA gets chopped up and recycled by the cell

Another way in which RNAi takes place is the inhibition of replication before a RISC complex is available. The siRNA and miRNA molecules can bind to the mRNA, thus blocking this mRNA. This makes sure that the ribosomes will not be able to translate this mRNA.

restricition enzymes
Restriction enzymes recognize specific base pair sequences which a cell (or plasmid) has encountered before. These restriction enzymes will then cleave the DNA or RNA at these specific sequences, ensuring that the genetic information is not replicated.

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Answer 2

Clara Atchley

Antiviral Medications: These drugs, such as antiretrovirals for HIV or antivirals for influenza, can inhibit viral enzymes essential for replication. 2. Interferons: These proteins can interfere with viral replication by inducing the immune system to produce antiviral proteins. 3. Vaccines: Vaccines help the immune system identify and neutralize viruses before they can spread widely. 4. Host Cell Factors: Certain cellular proteins can hinder viral replication by interfering with viral replication machinery or by inducing cell death in infected cells. 5. RNA Interference (RNAi): RNAi mechanisms can silence viral genes, preventing viral replication. 6. Physical Barriers: Physical barriers, such as mucous membranes, can hinder viral replication.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.