Fall Semester Exam Review #2

Front

What is the combined portions of Earth and atmosphere in which all living things exist?

Back

Biosphere

Front

What is the term used to describe the energy needed to get a reaction started?

Back

Activation energy

Front

What is the total amount of living tissue with a given trophic level called?

Back

Biomass

Front

What is the lowest level of environmental complexity that includes living and nonliving factors?

Back

Ecosystem

Front

What are RNA molecules made of?

Back

Nucleotides

Front

What is a biome?

Back

A large geographic biotic unit, a major community of plants and animals with similar life forms and environmental conditions.

Front

What is a community in ecological terms?

Back

A group of different species that live together in one area.

Front

What is the difference between cohesion and adhesion?

Back

Cohesion is the attraction between molecules of the same substance, while adhesion is the attraction between molecules of different substances.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants, convert solar energy into chemical energy through photosynthesis.

Front

What is a trophic level?

Back

Each step in a food chain or food web, representing the flow of energy and nutrients.