Nitrogen-Fixing Bacteria and Nitrifying Bacteria Convert Atmospheric Nitrogen into Different

question 15

Multiple Choice

Nitrogen-fixing bacteria and nitrifying bacteria convert atmospheric nitrogen into different compounds of nitrogen such as:
(a) ammonium ion, (b) ammonia, (c) nitrate ion, and (d) nitrite ion. Which of the following is the correct sequence of formation of the nitrogen compounds?

• A) a, b, c, and d
• B) b, a, d, and c
• C) b, a, c, and d
• D) a, b, d, and c

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