00:01
Hello everyone, in this question we have been asked that which of the following statements regarding viruses is incorrect.
00:07
So here option a says that viruses are acellular not composed of cells.
00:14
So that is true here because there are viruses which can only be proteins like the prions are there.
00:22
Then there can be the viruses which are only the genetic material which are the viroids and the complete virus which has the genetic material as well as the proteinaceous structure is known as the virions.
00:39
So this statement here is true.
00:41
Then option b says that viruses rely on their host cells for protein synthesis.
00:46
So this here is also true because the viruses here can basically use the host cell replication mechanism to replicate and it absolutely rely on the protein synthesis machinery of their host cells.
01:04
Then option c says the genome of viruses can mutate.
01:07
So that is true here because there can be many changes in the viruses.
01:12
There can be random copying errors which basically brings about the change in the surface proteins or antigens.
01:20
So their genetic mutation can be there.
01:22
Then option d says viruses can reproduce only upon infection of their host cells...