1. capsid
2. envelope
3. glycolipid
4. cytoplasm
capsid
1. chromosomes
2. ribosomes
3. nucleic acid
4. carbohydrates
nucleic acid
1. they arose from nucleic acid and protein found in primitive wat
2. they arose from bacteria as a result of loss of cell wall
3. they arose from some of the bacteria, which had developed a nucleus only
4. they are modified plasmids, which are the fragments of the nucleic acids of the host
they are modified plasmids, which are the fragments of
the nucleic acids of the host
1. viroid
2. virusoid
3. virion
4. virus particle
virion
1. ss DNA
2. ds DNA
3. ss RNA
4. ds RNA
ds DNA
1. DNA
2. RNA
3. Both (a) and (b)
4. None of these
RNA
1. Bacteria
2. Viruses
3. Blue-green algae
4. None of these
Viruses
1. have enzymes
2. have nucleic acids
3. are colourless
4. are heterotrophic
have nucleic acids
1. tobacco mosaic virus
2. myxovirus
3. coliphage f2-bacteriophage virus
4. herpes virus
herpes virus
1. 6 nm
2. 10 nm
3. 2 nm
4. 1 nm
2 nm