Which one of the following pairs is wrongly matched?

• methanogens - gobar gas

• yeast - ethanol

• streptomycetes - antibiotic

• streptomycetes - antibiotic

The bacterium (Clostridium botulinum) that causes botulism is

• a facultative anaerobe

• an obligate anaerobe

• a facultative aerobe

• a facultative aerobe

33.

Curing of tea leaves is brought about by the activity of

• bacteria

• mycorrhiza

• viruses

• viruses

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

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

Roquefort cheese is ripened by using a

• type of yeast

• fungus

• bacterium

• cyanobacteria

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

Pebrine is a disease of

• Fish

• Honey Bee

• Silk Worm

• lac insect

Which one of the following microbes is the source for vitamin-C?

• Pseudomonas sp.

• Acetobacter sp.

• Aspergillus sp.

• Chlorella

Gas gangrene is caused by

• Clostridium botulinum

• Xanthomonas campestris

• Pseudomonas

• Clostridium perfringens