plaque
phnge
streak
krnn/
A. plaque
virion
vira
viroid
none of these
episome
mesosome
free DNA
T-phage
lesion
lysis
autolysis
haemolysis
antivirin
antigen
virion
interferon
living organisms
non-living organisms
a transitional group between living and non-living world
living organisms which have lost the power of multiplication
viruses
bacteria
algae
fungi
bacteriophage
coliphage
phytophage
zoophage
DNA
RNA
both DNA and RNA
none of these
Early blight of potato
Late blight of potato
Leaf roll of potato
None of these
Stanley
Iwanowiski
Twort
Herelle
double stranded RNA
single stranded DNA
double stranded DNA
single stranded RNA
multiply only in the host cytoplasm
are made up of proteins only
behave as if they were plants
occur only inside bacteria
DNA
RNA
DNA and RNA
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
Tobacco mosaic virus
Poxvirus
Potato spindle tuber virus
None of these
RNA of the virus
DNA of the virus
RNA of the host
Ribosome of the host
Smith
Temin
Twort
Mayer
plaque
phnge
streak
krnn/
D. Iwanowski
F.C. Bawden
W.M. Stanley
K.M.Smith
poison
secretion
cell
venom
picornaviruses
binal viruses
riboviruses
none of these
Tobacco mosaic virus
Potato mosaic virus
Cauliflower mosaic virus
Tomato mosaic virus
prophage
vegephaege
cyanophage
phycophage
vaccination against small pox
vaccination against chicken pox
immunization against small pox
immunization against chickcn pox
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
can grow inside a living host
can multiply inside a living host
can undergo mutation inside a living host
are non-cellular
1 nm
3 nm
6 nm
2 nm
Replication
Mutation
Production of energy
Growth
Safferman and Morris
Lederberg and Zinder
Smithv and Knight
None of these
mumps
cholera
typhoid
plague