Passive Transport Practice Quiz

Where do cells get the oxygen, water, and nutrients they need to function?

• From the stomach

• From the lungs

• From the heart

• From the bloodstream

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NGSS.MS-LS1-6

Cell membranes are selectively permeable. What does "permeable" mean?

• Unable to be penetrated

• Able to be penetrated

• Extremely thick

• Extremely thin

What might happen if cell membranes did not have pores?

• Substances would not be able to move in an out.

• Viruses and bacteria would be able to get in more easily.

• The cell would not be able to divide.

• The cell membrane would become a cell wall, instead.

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NGSS.MS-LS1-2

Which of the following is an example of diffusion?

• Rain falling from the sky.

• Water freezing into ice.

• Sugar dissolving in a glass of water.

• A stone sinking to the bottom of a lake.

Which of the following describes a state of equilibrium?

• When water molecules have stopped moving or vibrating.

• When the concentration of water outside a cell is the same as the concentration of water inside a cell.

• When a cell with a lot of water in it continues to absorb water.

• when the roots of a tree absorbs nutrients from the soil.

In what direction do particles naturally diffuse?

• up concentration gradients

• Down concentration gradients

• Across concentration gradients

• Through concentration gradients

From the information presented in the movie, what can you infer about carbon dioxide?

• It is a waste gas that your cells need to get rid of.

• Your cells need a lot of it to function.

• It can only be moved into and out of cells through active transport.

• Its molecules are too large to fit through the pores of cells.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

When substances are constantly moving back and forth across a cell membrane, the cell is said to be in a state of:

• Dynamic equilibrium

• Dynamic diffusion

• Dynamic transport

• Dynamic absorption

What is the main difference between active transport and passive transport?

• Active transport involves molecules of gases; passive transport involves molecules of liquids

• Active transport takes place in plant cells; passive transport takes place in animal cells

• Active transport takes place in the bloodstream; passive transport takes place in cells

• Active transport requires a cell to use energy; passive transport does not.

Which of the following is a true statement about passive transport.

• Molecules of glucose can be imported into a cell without energy being expended.

• Cells do not need water or oxygen in order to function.

• Substances naturally move from areas of high concentration to areas of low concentration.

• Diffusion plays only a minor role in passive transport.