CBSE
Multiple Choice QuestionsWhich 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
Curing of tea leaves is brought about by the activity of
bacteria
mycorrhiza
viruses
viruses
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
Which one of the following microbes is the source for vitamin-C?
Pseudomonas sp.
Acetobacter sp.
Aspergillus sp.
Chlorella
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
Gas gangrene is caused by
Clostridium botulinum
Xanthomonas campestris
Pseudomonas
Clostridium perfringens
The bacterium (Clostridium botulinum) that causes botulism is
a facultative anaerobe
an obligate anaerobe
a facultative aerobe
a facultative aerobe
Which one of the following pairs is wrongly matched?
methanogens - gobar gas
yeast - ethanol
streptomycetes - antibiotic
streptomycetes - antibiotic
Roquefort cheese is ripened by using a
type of yeast
fungus
bacterium
cyanobacteria
Pebrine is a disease of
Fish
Honey Bee
Silk Worm
lac insect
