Diffusion and Osmosis Quiz

What is the net movement of molecules from an area of greater concentration to an area of lesser concentration called?

• Endocytosis

• Diffusion

• Osmosis

• Active transport

What is the process in which water passes from a region of high water concentration through a semi-permeable membrane to a region of low water concentration?

• Exocytosis

• Osmosis

• Active transport

• Diffusion

What type of solution has a higher concentration of solute outside of the cell?

• None of the above

• Hypertonic

• Isotonic

• Hypotonic

What is responsible for the movement of gases and small uncharged molecules into and out of cells?

• Osmosis

• Diffusion

• Active transport

• Endocytosis

What is the characteristic of a semi-permeable membrane?

• Allows all molecules to pass through

• Prevents all molecules from passing through

• Allows only water to pass through

• Allows some molecules to pass through

What is the result of adding sugars to water in terms of water concentration?

• Decrease in water concentration

• No change in water concentration

• Increase in water concentration

• Depends on the type of sugar

What is the term for the unequal distribution of molecules in a solution?

• Isotonic solution

• Osmotic pressure

• Dynamic equilibrium

• Concentration gradient

What is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration called?

• Active transport

• Osmosis

• Diffusion

• Exocytosis

What is the term for the net movement of molecules from an area of greater concentration to an area of lesser concentration?

• Active transport

• Endocytosis

• Diffusion

• Osmosis

What is the result of placing a red blood cell in a hypertonic solution?

• Cell retains its shape

• Cell gains water, expands

• Cell loses water, shrinks

• Depends on the type of red blood cell