Biology Semester 1 Final Review (Copy)

Front

What should a student do first if they spill a chemical in the lab?

Back

Tell the teacher so they can determine the proper clean-up procedure.

Front

What is a keystone species?

Back

A species that helps to hold an ecosystem together.

Front

What does the x-axis typically represent in a graph?

Back

Time.

Front

What do the arrows in a food chain or web represent?

Back

They show what direction the energy is flowing between organisms.

Front

What is a controlled variable in an experiment?

Back

A factor that is kept constant to ensure a fair test.

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

Define ecosystem.

Back

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

Front

What is photosynthesis?

Back

The process by which green plants use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the role of decomposers in an ecosystem?

Back

They break down dead organic material, returning nutrients to the soil.

Front

What is biodiversity?

Back

The variety of life in a particular habitat or ecosystem.