Viruses are abundant in nature and infect
and parasitize………
a) bacteria
b) plants
c) animals
d) all living organisms
Explanation: A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat.
Virus synthesizes its own self and then transfers itself by using biosynthesis machinery of…….
a) host
b) bacteria
c) cell
d) own
Which of the following disease/s is/are caused by viruses in human?
a) small pox
b) polio and influenza
c) AIDS
d) all of these
All of the following diseases are caused by viruses except…….
a) measles
b) SARS
c) Corona
d) cholera
Explanation: cholera is caused by bacterium Vibrio cholera
In how much time, a virus may take over a cell, copy itself hundreds of times and kill the cell?
a) 10 min
b) 20 min
c) 1 hour
d) 2 hour
Explanation: some viruses have a calculated replication time of about 70 s.
What is the replication time of bacterial cell?
a) 5 min
b) 10 min
c) 20 min
d) 1 hour
