Question

Modified True False The types of cells (and organisms) that a virus can infecti known as its infective dose. Poxviruses are viruses that infect bacteria. Some viral infection exist in a chronic latent state in which the virus lies dormant in the host for long periods of time and can become active under certain conditions. Bonus Questions (1/2 point each) 1) Researchers are working to develop viruses that attack cancer cells which are known as Oncones

Answer 1

5) False

Any dose (total number) of virus particles required to infect a cell or organism is known as it's infective dose(ID).

The type of cell or organism that the virus need to infect is known as host cell.

6.) False

True is Bacteriophages are the viruses that infect bacteria.

Poxvirus are oval or brick shaped double stranded DNA viruses that infect humans and certain type of animals.poxvirus infections are characterized by skin lesions.

7. True

Chronic latent state is the state at which some virus infections remain in inactive (dormant)state over long periods ,even for years and does not cause disease .It gets activated under certain conditions like immune suppression,fever etc .They exist inactivated in lysogenic phase and activated as lytic phase.

Example: Human herpes virus

Bonus questions

1. Oncolytic virus

The virus that infects and attacks the cancer cells are called oncolytic virus.They either directly destruct the cancer cells or stimulate anti tumour immune system responses.