Matter and Energy in Ecosystems Test

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What role do plants play in an ecosystem?

Back

Plants are primary producers in an ecosystem. They convert sunlight into energy through photosynthesis, providing food and oxygen for other organisms.

Front

What are energy storage molecules?

Back

Energy storage molecules, such as glucose, are compounds that store energy for later use by organisms.

Front

How does carbon enter the food chain?

Back

Carbon enters the food chain through photosynthesis, where plants absorb carbon dioxide from the atmosphere and convert it into organic compounds.

Front

What happens to carbon in an ecosystem when organisms consume plants?

Back

When organisms consume plants, they take in the carbon stored in the plant's tissues, which becomes part of their own bodies.

Front

What is the relationship between energy storage molecules and carbon?

Back

The amount of energy storage molecules in an organism is directly related to the amount of carbon it contains, as carbon is a key component of these molecules.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and helping recycle carbon back into the ecosystem.

Front

How do changes in energy storage molecules affect carbon levels in an ecosystem?

Back

An increase in energy storage molecules typically indicates an increase in carbon levels, while a decrease suggests a loss of carbon.

Front

What is the significance of sunlight for plants?

Back

Sunlight is essential for photosynthesis, allowing plants to produce energy storage molecules and oxygen.

Front

What happens to energy storage molecules during respiration?

Back

During respiration, organisms break down energy storage molecules to release energy for their metabolic processes.