Unit 1 Exam - AP Environmental Science

Front

What do organisms need nitrogen for?

Back

To build proteins & DNA/RNA.

Front

What is net primary productivity?

Back

The organic materials that remain after photosynthetic organisms have used some compounds for cellular respiration.

Front

What factors best explain differences in net primary productivity among terrestrial biomes?

Back

Precipitation and Temperature.

Front

How does energy flow in an ecosystem?

Back

Energy flows into an ecosystem through producers and is ultimately lost as heat.

Front

What is mutualism?

Back

A symbiotic relationship where both species benefit, such as red-billed oxpeckers feeding on parasites of impala.

Front

Define gross primary productivity.

Back

The total amount of organic material produced by photosynthetic organisms before any is used for respiration.

Front

What is secondary productivity?

Back

The generation of biomass by heterotrophic organisms in an ecosystem.

Front

Explain the term 'biome'.

Back

A large ecological area on the earth's surface with flora and fauna adapting to their environment.

Front

What role do producers play in an ecosystem?

Back

Producers convert solar energy into chemical energy through photosynthesis.

Front

What is the significance of cellular respiration in ecosystems?

Back

It allows organisms to convert glucose into usable energy, releasing carbon dioxide and water.