Matter cycles

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 fixation, nitrification, denitrification, and ammonification, allowing nitrogen to be used by living organisms.

Front

What is carbon dioxide?

Back

Carbon dioxide (CO2) is a colorless, odorless gas found in the atmosphere, produced by respiration and combustion, and is a key component of the carbon cycle.

Front

What is respiration?

Back

Respiration is the biochemical process in which living organisms convert glucose and oxygen into energy, carbon dioxide, and water.

Front

Why is nitrogen essential for living organisms?

Back

Nitrogen is essential for living organisms because it is a key component of amino acids, proteins, and nucleic acids (DNA and RNA).

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

Front

What role do producers play in the ecosystem?

Back

Producers, such as plants, are organisms that create their own food through photosynthesis and serve as the primary source of energy for consumers in the ecosystem.

Front

What is the role of decomposers in the nitrogen cycle?

Back

Decomposers break down dead organic matter, returning nitrogen to the soil in the form of ammonium, which can then be used by plants.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process of converting atmospheric nitrogen (N2) into a form that plants can absorb, such as ammonia (NH3), often facilitated by certain bacteria.

Front

What is the significance of the carbon cycle?

Back

The carbon cycle is significant because it regulates the levels of carbon dioxide in the atmosphere, which is crucial for maintaining Earth's climate and supporting life.

Front

What are amino acids?

Back

Amino acids are organic compounds that serve as the building blocks of proteins, essential for growth and repair in living organisms.