DNA
RNA
DNA and RNA
None of these
viruses
bacteria
fungi
none of these
picornaviruses
binal viruses
riboviruses
none of these
antivirin
antigen
virion
interferon
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
plaque
phnge
streak
krnn/
Safferman and Morris
Lederberg and Zinder
Smithv and Knight
None of these
multiply only in the host cytoplasm
are made up of proteins only
behave as if they were plants
occur only inside bacteria
Protein part of virus
Nucleic part of virus
Both (a) and (b)
None of these
balanced
threshold
transitional
none of these
living organisms
non-living organisms
a transitional group between living and non-living world
living organisms which have lost the power of multiplication
virion
vira
viroid
none of these
Tobacco mosaic virus
Potato mosaic virus
Cauliflower mosaic virus
Tomato mosaic virus
Smith
Temin
Twort
Mayer
are colourless
have enzymes
have nucleic acids
none of these
can grow inside a living host
can multiply inside a living host
can undergo mutation inside a living host
are non-cellular
D. Iwanowski
F.C. Bawden
W.M. Stanley
K.M.Smith
Tobacco mosaic virus
Poxvirus
Potato spindle tuber virus
None of these
bacteriophage
coliphage
phytophage
zoophage
transformation
transduction
conjugation
candidiasis
lysis
lysogeny
prophage
attenuated virus
viruses
slimemoulds
fungi
bacterium
RNA of the virus
DNA of the virus
RNA of the host
Ribosome of the host
prophage
vegephaege
cyanophage
phycophage
a buch of genomes which are looking for a suitable host for replication
micro-organisms which contains DNA only
smallest micro-organisms causing disease
micro-organisms which contains RNA only
vaccination against small pox
vaccination against chicken pox
immunization against small pox
immunization against chickcn pox
double stranded RNA
single stranded DNA
double stranded DNA
single stranded RNA
Replication
Mutation
Production of energy
Growth
Stanley
Iwanowiski
Twort
Herelle
1 nm
3 nm
6 nm
2 nm