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Nady [450]
3 years ago
11

Could someone help me out on this problem

Biology
1 answer:
Contact [7]3 years ago
3 0
I would go with the first option
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A bacterial culture is being tested for its ability to reduce nitrate. After incubation and growth of the bacteria in nitrate br
skelet666 [1.2K]

Answer:

All this combination of reactions is summarized in that the bacteria reduced nitrate, that is, they added protons to said compound, giving nitrite as a product.

By promoting the appearance of nitrite and that it increases in its concentrations when the zinc dust is thrown away, it becomes reddish since there was a change in pH, that is, the medium was acidified.

Explanation:

Some bacteria take nitrate as a source and end up generating an oxide reduction reaction that gives nitrite as a product, if this reaction advances in a chain, that is, the nitrite is reduced after the nitrate, the product in the future would be ammonia

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Which structure is the initial entry way for air to enter the respiratory system?
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