Which of the following soil microorganism breaks down plant and animal protein into ammonia?

Bacillus subtilis

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Nitrosomonas

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Pseudomonas

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None of the above

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Solution

The correct option is B Bacillus subtilis
Nitrosomonas oxidizes ammonia into nitrite. Pseudomonas is a denitrifying bacteria, converting ammonia to gaseous nitrogen. Bacillus subtilis is a soil, gram positive bacteria that can break down plant and animal protein into ammonia by the anaerobic process as it is a putrefying bacteria.
Thus, the correct answer is option A.

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Question 5
If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?

(a) Proteins breaking down into amino acids
(b) Starch breaking down into sugars
(c) Fats breaking down into fatty acids and glycerol
(d) Absorption of vitamins

If the saliva is lacking in salivary amylase, then which of the following processes taking place in the buccal cavity will be affected ?.
(a) proteins breaking down into amino acids
(b) starch breaking down into sugars
(c) fats breaking down into fatty acids and glycerol
(d) intestinal layer breaking down leading to ulcers

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