Cellular Transport Lesson

Cellular Transport Lesson

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Multiple Choice

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

• Nothing can pass through them.

• They block large particles, but not small ones.

• Particles are able to pass through them.

• Some particles can pass through them, while others cannot.

Multiple Choice

What is the difference between passive and active 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.

Multiple Choice

What is equilibrium?

• when the amount of particles equals the amount needed within the cell

• when there are equal concentrations of particles both in and out of the cell

• when the amount of particles needed are equal to the amount outside of the cell

• when there are no particles in or outside of the cell

Multiple Choice

Which of the following is NOT a type of passive transport?

• endocytosis

• diffusion

• osmosis

• facilitated diffusion

Multiple Choice

How do particles move in passive transport?

• From areas of high concentration to low concentration (with or down the concentration gradient)

• From areas of low concentration to high concentration (against the concentration gradient)

• From areas of low concentration to low concentration (below the concentration gradient)

• From areas of high concentration to high concentration (above the concentration gradient)

Multiple Choice

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.

Multiple Choice

Movement of oxygen and carbon dioxide across the plasma membrane with the concentration gradient would be and example of ________

• Endocytosis

• Exocytosis

• facilitated diffusion

• simple diffusion

Multiple Choice

What is the relationship between diffusion and osmosis?

• They are both forms of active transport.

• Diffusion is the how water moves and out of a cell; while osmosis is how other materials move in and out of a cell

• They both require energy.

• Osmosis is the diffusion of water

Multiple Choice

What might happen if a cell did not have any ATP?

• It would not have enough energy to carry out active transport.

• Its transport proteins would be made of carbohydrates instead.

• Its cell membrane would no longer be semi-permeable.

• Its concentration gradient would be steeper.

Multiple Choice

How do cells gets rid of large waste in active transport?

• endocytosis

• exocytosis

• trashcytosis

• none is correct