Cycles of Matter Flashcard

Front

What is phosphorus important for in living cells?

Back

Phosphorus is important for making DNA and RNA.

Front

What is the process called where bacteria convert nitrogen gas into ammonia and nitrites & nitrates?

Back

Nitrogen fixation.

Front

What is the hydrologic cycle also known as?

Back

The water cycle.

Front

What is the main organism that carries out nitrogen fixation?

Back

Bacteria.

Front

How do non-human living things participate in the nitrogen cycle?

Back

Bacteria decompose organic matter, animals move nitrogen during consumption, and bacteria convert waste into ammonia.

Front

Define the nitrogen cycle.

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen fixation, nitrification, and denitrification.

Front

What role do plants play in the nitrogen cycle?

Back

Plants absorb nitrates from the soil to synthesize proteins.

Front

What is denitrification?

Back

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

Front

What is the significance of the water cycle?

Back

The water cycle is essential for distributing water across the planet, supporting all forms of life.

Front

What is ammonification?

Back

Ammonification is the process by which bacteria convert organic nitrogen from dead organisms into ammonia.