Nitrogen fixation:

Question

Nitrogen fixation:

Quizplus · Accepted Answer

Nitrogen fixation is the process by which certain bacteria convert atmospheric nitrogen gas (N2) into ammonia (NH3), which can then be used by plants and other organisms as a source of nitrogen for building proteins and other essential molecules. This process is essential for supporting life on Earth, as nitrogen is a key component of DNA, RNA, and proteins, and is often a limiting factor for plant growth in many ecosystems. Option A is incorrect because it describes the opposite of nitrogen fixation, namely nitrogen accumulation due to a lack of decomposition. Option B describes a process called nitrification, which is the conversion of ammonia to nitrite and nitrate by certain bacteria. Option C describes the opposite of nitrification, namely the conversion of nitrate to ammonia by certain bacteria. Option D describes denitrification, which is the process by which certain bacteria convert nitrate back into nitrogen gas.

Nitrogen Fixation