The parasite that is nonliving outside a living cell but become living on entering it

The parasite that is non-living outside a living cell, but becomes living on entering a living host cell is

Which of the following parasites is nonliving outside the host but becomes living on entering it?

Which of the following parasites is nonliving outside the host but becomes living on entering it?

Which of the following parasites is nonliving outside the host but becomes living on entering it?

Which of the following parasites is nonliving outside the host but becomes living on entering it?

Which of the following parasites is nonliving outside the cell of a living organism and becomes living on entering it ?

Which of the following parasites is nonliving outside the cell of a living organism and becomes living on entering it ?

Which of the following parasites is nonliving outside the cell of a living organism and becomes living on entering it ?

Which of the following parasites is nonliving outside the cell of a living organism and becomes living on entering it ?

Which has living cells