AICE Marine Science Ch.1-3 EXAM Artifact #2 (20 marks)

Front

What is a dependent variable?

Back

A dependent variable is a variable that is measured in an experiment to assess the effect of changes in the independent variable.

Front

Can a theory become a scientific law?

Back

False. A theory explains why something happens, while a law describes what happens under certain conditions.

Front

How does energy enter marine ecosystems?

Back

Energy enters marine ecosystems primarily through photosynthesis and chemosynthesis.

Front

What is the equation for Net Primary Productivity (NPP)?

Back

NPP = GPP - R, where GPP is Gross Primary Productivity and R is respiration.

Front

Which organisms primarily carry out photosynthesis in the oceans?

Back

Phytoplankton are the main organisms that perform photosynthesis in marine environments.

Front

What is an independent variable?

Back

An independent variable is the variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a control variable?

Back

A control variable is a variable that is kept constant throughout an experiment to ensure that the results are valid.

Front

What is the difference between Gross Primary Productivity (GPP) and Net Primary Productivity (NPP)?

Back

GPP is the total amount of energy produced by photosynthesis, while NPP is the energy available after accounting for respiration.

Front

What role do zooxanthellae play in marine ecosystems?

Back

Zooxanthellae are symbiotic algae that live in coral tissues and provide energy through photosynthesis.

Front

What is chemosynthesis?

Back

Chemosynthesis is the process by which certain organisms convert inorganic compounds into organic matter using energy derived from chemical reactions.