Question :
Which of the following micro organism is used in milk curdling?
Option 1:
Acetobacter
Option 2:
Leuconostoc
Option 3: Bacillus
Option 4: Lactobacillus
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Correct Answer: Lactobacillus
Solution : The correct option is Lactobacillus.
Lactic acid bacteria, namely Lactobacillus strains, are often utilised in milk curdling. Lactose, the sugar found in milk, is fermented by these bacteria into lactic acid. This lowers the pH of the milk, allowing it to curdle and form curds, which is an important stage in the manufacture of cheese and yoghurt. Lactic acid bacteria aid in the coagulation of milk proteins, resulting in the separation of curds (solid) and whey (liquid).
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Which of the following is the basic characteristic of a living organism?
Ability to breathe
Ability to reproduce
Option 3:
Ability to move
Option 4: Ability to eat
Animals with Chitinous exoskeletons are:
Insects
Sponges
Option 3: Sea urchin
Option 4: Snails
An eardrum is absent in:
Snakes
Turtle
Option 3: Tuatara
Option 4: Toads
Nematocysts are present in:
Starfish
Ascaris
Option 3: Centipede
Option 4: Sea anemone
The scavengers of earth are:
Bacteria
Viruses
Option 3: Algae
Option 4: Fungi
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