Viruses > Content Review
DNA or RNA
They pass through a wound.
They bind to a membrane protein.
They bind to the lipid bilayer.
They puncture the cell wall.
HIV can infect cells other than CD4+ T cells.
Mouse cells with CD4 in their membranes could be infected with HIV.
Mouse cells with CD4 in their membranes could not be infected with HIV.
Their close relatives, the SIVs, require a co-receptor.
It synthesizes proteins from mRNA.
It synthesizes DNA from RNA.
It synthesizes RNA from DNA.
It synthesizes tRNAs from DNA.
nucleotides and amino acids
all of the above
as they burst
as they integrate into the host chromosome
cutting of long peptide chains into functional proteins
assembly of particles
folding of long peptide chains into functional proteins
polymerization of amino acids into peptides
They have no protein fragments that can be recognized by a host cell.
The vaccines tend to be unstable and deteriorate over time.
New mutations constantly change viral proteins.
So many protein fragments are represented that the immune system overreacts.