Exploring Diffusion and Osmosis

What is the primary function of the cell membrane?

• To synthesize proteins

• To store genetic information

• To control the passage of materials in and out of the cell

• To produce energy

Which type of transport requires added energy?

• Diffusion

• Passive transport

• Osmosis

• Active transport

What is the movement of molecules from an area of high concentration to an area of low concentration called?

• Osmosis

• Facilitated transport

• Active transport

• Diffusion

Which factor does NOT affect the rate of diffusion?

• Temperature

• Starting concentration

• Color of the particles

• Size of the particles

What is the special term used for the diffusion of water?

• Osmosis

• Active transport

• Facilitated diffusion

• Endocytosis

In a hypertonic solution, what happens to the water concentration?

• It increases

• It decreases

• It remains the same

• It fluctuates

If a cell is placed in a solution with 20% solute on one side and 80% solute on the other, which direction will the water move?

• From the side with 80% solute to the side with 20% solute

• From the side with 20% solute to the side with 80% solute

• There will be no movement

• It will move in both directions equally

What happens to a red blood cell in a hypotonic solution?

• It shrivels up

• It maintains its shape

• It swells up and may burst

• It becomes concave

In an isotonic solution, how does water move?

• It does not move

• Only into the cell

• Only out of the cell

• In and out at equal rates

What is the overall pattern of water movement in osmosis?

• From hypotonic to hypertonic solutions

• From isotonic to hypotonic solutions

• From isotonic to hypertonic solutions

• From hypertonic to hypotonic solutions