The Nitrogen Cycle

The Nitrogen Cycle

Assessment

Flashcard

Biology

9th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the Nitrogen Cycle?

Back

The Nitrogen Cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen gas, ammonia, nitrites, and nitrates, in the environment.

2.

FLASHCARD QUESTION

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process by which nitrogen gas (N2) from the atmosphere is converted into ammonia (NH3) or related compounds in soil, making it available for plants.

3.

FLASHCARD QUESTION

Front

What role do bacteria play in the Nitrogen Cycle?

Back

Bacteria are essential in the Nitrogen Cycle as they help in nitrogen fixation, nitrification, and ammonification, converting nitrogen into forms usable by plants and animals.

4.

FLASHCARD QUESTION

Front

What is ammonification?

Back

Ammonification is the process by which decomposers break down organic matter, releasing ammonium (NH4+) into the soil.

5.

FLASHCARD QUESTION

Front

What are nitrates?

Back

Nitrates (NO3-) are a form of nitrogen that plants can absorb and use for growth.

6.

FLASHCARD QUESTION

Front

How do animals obtain nitrogen?

Back

Animals obtain nitrogen by consuming plants or other animals that contain nitrogen compounds.

7.

FLASHCARD QUESTION

Front

What is denitrification?

Back

Denitrification is the process by which bacteria convert nitrates back into nitrogen gas (N2), returning it to the atmosphere.

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