LE Midterm Review Regents 2023

Front

What is active transport?

Back

Active transport is the process by which cells use energy to move materials across a membrane from an area of low concentration to an area of high concentration.

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What is biomagnification?

Back

Biomagnification is the process by which the concentration of toxins increases in organisms at each successive level of the food chain.

Front

What is a dependent variable?

Back

The dependent variable is the variable that is being measured or observed in an experiment, responding to changes in the independent variable.

Front

How can turning off electricity help prevent climate change?

Back

Turning off electricity when not in use reduces energy consumption, which can lower greenhouse gas emissions and help mitigate climate change.

Front

What does a food chain illustrate?

Back

A food chain illustrates the flow of energy through an ecosystem, showing how energy is transferred from one organism to another.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically from an area of high concentration to an area of low concentration.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until equilibrium is reached.

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What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the independent variable?

Back

The independent variable is the variable that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

What is the role of a control in an experiment?

Back

A control is a standard for comparison in an experiment, ensuring that the results are due to the independent variable.