living organisms
non-living organisms
a transitional group between living and non-living world
living organisms which have lost the power of multiplication
C. a transitional group between living and non-living world
Tobacco mosaic virus
Potato mosaic virus
Cauliflower mosaic virus
Tomato mosaic virus
mumps
cholera
typhoid
plague
poison
secretion
cell
venom
DNA
RNA
DNA and RNA
None of these
RNA of the virus
DNA of the virus
RNA of the host
Ribosome of the host
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
Early blight of potato
Late blight of potato
Leaf roll of potato
None of these
DNA
RNA
both DNA and RNA
none of these
RNA
DNA
DNA and RNA
none of these
D. Iwanowski
F.C. Bawden
W.M. Stanley
K.M.Smith
are colourless
have enzymes
have nucleic acids
none of these
double stranded RNA
single stranded DNA
double stranded DNA
single stranded RNA
viruses
bacteria
fungi
none of these
antivirin
antigen
virion
interferon
transformation
transduction
conjugation
candidiasis
multiply only in the host cytoplasm
are made up of proteins only
behave as if they were plants
occur only inside bacteria
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
Tobacco mosaic virus
Poxvirus
Potato spindle tuber virus
None of these
lysis
lysogeny
prophage
attenuated virus
Smith
Temin
Twort
Mayer
Replication
Mutation
Production of energy
Growth
Protein part of virus
Nucleic part of virus
Both (a) and (b)
None of these
balanced
threshold
transitional
none of these
episome
mesosome
free DNA
T-phage
living organisms
non-living organisms
a transitional group between living and non-living world
living organisms which have lost the power of multiplication
Safferman and Morris
Lederberg and Zinder
Smithv and Knight
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
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
bacteriophage
coliphage
phytophage
zoophage
viruses
slimemoulds
fungi
bacterium