CBSE
Curing of tea leaves is brought about by the activity of
bacteria
mycorrhiza
viruses
viruses
Which one of the following pairs is wrongly matched?
methanogens - gobar gas
yeast - ethanol
streptomycetes - antibiotic
streptomycetes - antibiotic
Pebrine is a disease of
Fish
Honey Bee
Silk Worm
lac insect
Which one of the following pairs is not correctly matched?
VItamin B12 → Pernicious anaemia
Vitamin-B6 → Loss of appetite
Vitamin-B1 →Beri-Beri
Vitamin-B2 → Pellagra
Bacterial endotoxin is
A toxic protein that stays inside the bacterial cell
A toxic protein that is excreted into the medium
Lipopolysaccharide located on the surface of the bacteria
None of the above
The bacterium (Clostridium botulinum) that causes botulism is
a facultative anaerobe
an obligate anaerobe
a facultative aerobe
a facultative aerobe
Which of the following is correctly matched for the product produced by them?
Acetobacter aceti : Antibiotics
Methanobterium : Lactic acid
Penicillium notatum : Acetic acid
Penicillium notatum : Acetic acid
Gas gangrene is caused by
Clostridium botulinum
Xanthomonas campestris
Pseudomonas
Clostridium perfringens
Which one of the following microbes is the source for vitamin-C?
Pseudomonas sp.
Acetobacter sp.
Aspergillus sp.
Chlorella
Roquefort cheese is ripened by using a
type of yeast
fungus
bacterium
cyanobacteria