Question

Which statements describe the importance of the nitrogen cycle to living things? Select two options.

It provides a source of water.
It helps cells make proteins.
It provides a form of usable nitrogen.
It removes carbon dioxide from the atmosphere.
It destroys harmful bacteria.
It helps cells make glucose.

Answer 1

- It helps cells make proteins.
- It provides a form of usable nitrogen.

Nitrogen cycling (fixation, nitrification, etc.) makes atmospheric N2 available as ammonium/nitrate for organisms, and nitrogen is required to build amino acids and proteins.