viruses
bacteria
algae
fungi
A. viruses
vaccination against small pox
vaccination against chicken pox
immunization against small pox
immunization against chickcn pox
living organisms
non-living organisms
a transitional group between living and non-living world
living organisms which have lost the power of multiplication
plaque
phnge
streak
krnn/
viruses
slimemoulds
fungi
bacterium
1 nm
3 nm
6 nm
2 nm
RNA of the virus
DNA of the virus
RNA of the host
Ribosome of the host
Tobacco mosaic virus
Poxvirus
Potato spindle tuber virus
None of these
Safferman and Morris
Lederberg and Zinder
Smithv and Knight
None of these
antivirin
antigen
virion
interferon
are colourless
have enzymes
have nucleic acids
none of these
virion
vira
viroid
none of these
Early blight of potato
Late blight of potato
Leaf roll of potato
None of these
they kill all bacteria which form host of viruses
viruses have no metabolism of their own
viruses form endospores
viruses are too small in size
prophage
vegephaege
cyanophage
phycophage
D. Iwanowski
F.C. Bawden
W.M. Stanley
K.M.Smith
mumps
cholera
typhoid
plague
can grow inside a living host
can multiply inside a living host
can undergo mutation inside a living host
are non-cellular
transformation
transduction
conjugation
candidiasis
Replication
Mutation
Production of energy
Growth
an outer protein coat and a central core of DNA or RNA
outer RNA or DNA and a central core of proteins
only nucleic acids
only protein coats
Protein part of virus
Nucleic part of virus
Both (a) and (b)
None of these
viruses
bacteria
algae
fungi
RNA
DNA
DNA and RNA
none of these
lesion
lysis
autolysis
haemolysis
DNA
RNA
DNA and RNA
None of these
Smith
Temin
Twort
Mayer
lysis
lysogeny
prophage
attenuated virus
Stanley
Iwanowiski
Twort
Herelle
multiply only in the host cytoplasm
are made up of proteins only
behave as if they were plants
occur only inside bacteria
poison
secretion
cell
venom