Why are viruses very much used as biological research tools?
They have ability to pass on genetic information from one cell to another cell.
Due to their simplicity of structure and rapid multiplication.
They are used in eradicating harmful parts.
They are used to produce vaccine
Which gas is liberated by the conversion of sugar solution into alcohol.
Oxygen
Carbondioxide
Carbon monoxide
Nitrogen
Which process is used to preserve milk.
canning
refrigeration
heating
pasteurisation
Name a good preservative.
Oxalic acid
Vinegar
Butyl alcohol
Methyl alcohol
Name the activity by which the leaves of tea, tobacco etc are fermented.
Bacillus megaterium
Psedomonas
Methanogens
Nitrosomonas
Name the rod shaped bacteria
Cocci
Bacilli
Spirillum
Vibrio
Name a nitrogen-fixing bacteria
Bacillus ramosus
Nitro bacter
Acetobacter
Name two micro organisms which are used to make antibiotics.
Bacteria, virus
Bacteria, fungi
Virus, fungi
Fungi, algae
Name the species of bacteria which cause the disease 'citrus canker'
Xanthomonas citri
Xanthomonas oryzae
Pseudomonas spp
Solanacearum
Which process is used to preserve fish, meat and vegetable?
Canning
Dehydration
Heating
Refrigeration
