Energy and Matter Review

Front

What ancient theory did Joseph Priestly’s experiments help to disprove?

Back

Four Elements Theory

Front

What molecule did Joseph Priestly discover?

Back

Oxygen

Front

What is Net Primary Productivity (NPP)?

Back

The amount of biomass produced by plants in an ecosystem after accounting for energy used in respiration.

Front

What is Gross Primary Productivity (GPP)?

Back

The total amount of energy captured by photosynthesis in an ecosystem.

Front

What does respiration (R) refer to in ecological terms?

Back

The process by which organisms convert energy stored in biomass into usable energy, releasing heat.

Front

How is NPP calculated?

Back

NPP = GPP - R

Front

What role do plants play in the carbon cycle?

Back

Plants absorb carbon dioxide during photosynthesis, converting it into organic matter.

Front

What is the significance of oxygen in the process of respiration?

Back

Oxygen is used by organisms to break down glucose, releasing energy.

Front

What is the relationship between GPP and NPP?

Back

GPP represents total energy capture, while NPP is the energy available for growth after respiration.

Front

What factors can affect primary productivity in an ecosystem?

Back

Light availability, temperature, water, and nutrient levels.