Life Science Final Review

Front

Watson and Crick built a DNA model like a

Back

Long, twisted ladder.

Front

What are the four necessities of life?

Back

Food, water, air, and shelter.

Front

What type of symbiosis is represented by a tick on a human?

Back

Parasitism.

Front

What is a single dolphin an example of?

Back

Individual.

Front

True or False: We cannot use the nitrogen found in the air we breathe. We must get our nitrogen from the foods that we eat.

Back

True.

Front

What is the definition of an ecosystem?

Back

A community of living organisms and their interactions with their environment.

Front

What is mutualism?

Back

A type of symbiosis where both organisms benefit.

Front

What is commensalism?

Back

A type of symbiosis where one organism benefits and the other is neither helped nor harmed.

Front

What is a population?

Back

A group of individuals of the same species living in a specific area.

Front

What is a community in ecological terms?

Back

All the different populations that live together in an area.