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1. Team 12. Team 23. Team 34. Team 45. Team 56. Team 6

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The dispersal of perfume in a room is an example of

A. B. C. D.

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A. DiffusionB. OsmosisC. Active transportD. Endocytosis

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When an egg is placed in distilled water, water will diffuse into the egg through the process of

A. B. C. D.

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A. SolubilityB. OsmosisC. Selective transportD. Endocytosis

Cells will shrink when placed in a(n)

A. B. C. D.

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A. Hypotonic solutionB. Hypertonic solutionC. Isotonic solutionD. None of the above

The interior portion of a cell membrane forms a nonpolar zone that

A. B. C. D.

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A. Allows polar molecules to pass through the membrane

B. Allows food to pass through the membrane

C. Prevents ions and most large molecules from passing through the membrane

D. None of the above

Proteins that act like selective passageways in the cell membrane are known as

A. B. C. D.

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A. Marker proteinsB. Channel proteinsC. Receptor proteinsD. Enzymes

Ions move through by .

A. B. C. D.

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A. Receptor proteins; endocytosisB. Marker proteins; diffusionC. Ion channels; passive transportD. Enzymes; active transport

Diffusion continues until the concentrations are the same in all areas which is known

A. B. C. D.

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A. Active transportB. Dynamic equilibriumC. Passive transportD. Exocytosis

This determines the direction in which a substance diffuses across a cell membrane.

A. B. C. D.

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A. DiffusionB. Dynamic equilibriumC. OsmosisD. Concentration gradient

Proteins involved in both facilitated diffusion and active transport are

A. B. C. D.

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A. Carrier proteinsB. Receptor proteinsC. Marker proteinsD. Enzymes

Which of the following require energy?

A. B. C. D.

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A. DiffusionB. OsmosisC. Facilitated diffusionD. Sodium-potassium pump

Unlike active transport, passive transport

A. B. C. D.

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A. Requires no energyB. Moves substances against their

concentration gradientC. Does not involve carrier proteinsD. All of the above

Which of the following is a form of passive transport?

A. B. C. D.

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A. EndocytosisB. ExocytosisC. Ion channelsD. Sodium-potassium pumps

Sodium-potassium pumps will pump sodium ions the cell and potassium ions the cell.

A. B. C. D.

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A. Into, intoB. Out of, out ofC. Into, out ofD. Out of, into

Molecules that are too large to fit across the cell membrane can be transported into the cell by and out of the cell by

A. B. C. D.

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A. Facilitated diffusion; ion channelsB. Diffusion; osmosisC. Channel proteins; dynamic

equilibriumD. Endocytosis; exocytosis

Unlike facilitated diffusion, active transport

A. B. C. D.

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A. Moves substances against the concentration gradient

B. Uses proteins in the processC. Moves molecules through the cell

membraneD. Requires no energy

Which cell is most likely to gain both water molecules and solute molecules as the system approaches

equilibrium?

A. B. C. D.

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A. Cell 1B. Cell 2C. Cell 3D. Cell 4

In this system, solute molecules in cell 4 are most likely to

A. B. C. D.

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A. Remain in cell 4.B. Adhere to cell 4’s membraneC. Diffuse into cell 3D. Diffuse into cell 2

In which direction are water molecules in this system most likely to diffuse?

A. B. C. D.

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A. From 1 to 2B. From 3 to 4C. From 4 to 2D. From 1 to 3

Osmosis is the diffusion of molecules across a cell membrane.

A. B. C. D.

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A. GlucoseB. IonsC. Starch D. Water

Membranes are if they allow only certain substances to move across them.

A. B. C. D.

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A. PermeableB. ImpermeableC. SemipermeableD. None of the above

A cell placed in a strong salt solution would probably do what because of osmosis?

A. B. C. D.

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A. BurstB. ShrinkC. Stay the sameD. Get bigger then smaller

Which of the following do NOT require carrier proteins?

A. B. C. D.

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A. Active transportB. Facilitated diffusionC. Ion channelsD. Osmosis

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