What term describes bacteria that can use nitrogen in soil to make nitrogen compounds?

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Multiple Choice

What term describes bacteria that can use nitrogen in soil to make nitrogen compounds?

Explanation:
Nitrogen fixation is the process that fits this description. Certain bacteria in soil can convert inert atmospheric nitrogen (N2) into forms that plants can use, such as ammonia (NH3) or ammonium (NH4+). This makes nitrogen available for building essential molecules like proteins and DNA. Nitrogen fixing bacteria are the ones responsible for this conversion, often living in root nodules of legumes or freely in soil. Nitrification is a separate step where ammonia is oxidized to nitrite and then to nitrate, while denitrifying bacteria convert nitrate back to nitrogen gas under low-oxygen conditions. An adaptive trait is a broad term that doesn’t specifically describe the nitrogen conversion process in soil.

Nitrogen fixation is the process that fits this description. Certain bacteria in soil can convert inert atmospheric nitrogen (N2) into forms that plants can use, such as ammonia (NH3) or ammonium (NH4+). This makes nitrogen available for building essential molecules like proteins and DNA. Nitrogen fixing bacteria are the ones responsible for this conversion, often living in root nodules of legumes or freely in soil.

Nitrification is a separate step where ammonia is oxidized to nitrite and then to nitrate, while denitrifying bacteria convert nitrate back to nitrogen gas under low-oxygen conditions. An adaptive trait is a broad term that doesn’t specifically describe the nitrogen conversion process in soil.

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