Viruses

Question 1

what is a Virus

Answer 1

obligate intracellular parasites able to infect all living organisms.

replicates only inside the living cells of other organisms

Question 2

what is the complete infective form of a virus called, what does it consist of

Answer 2

viron - has protein coating (capsid) surrounding a core containing the viral genome (generic material either DNA or RNA)

some virions coated by an outer lipoprotein envelope, which surrounds the protein capsid of the virus

Question 3

what size range are viruses. what’s the largest virus

Answer 3

25-300nm. largest is the pox virus

Question 4

how are viruses identified

Answer 4

can grow viruses in tissue culture and amplify genes by polymerase chain reaction

Question 5

what do viruses look like?

Answer 5

either naked or enveloped with an isohedral shape

Question 6

give an example of an enveloped virus and what it causes

Answer 6

Rhinovirus - causes the common cold