4.2.7 Diffusion

Match

Match the prerequisite vocabulary word with the correct definition.

• bilayer

• homeostasis

• plasma membrane

• phospholipid

composed of two layers

organisms maintain stable environment

Protects the outside of the cell.

Majority of plasma membrane. Head/Tail

• composed of two layers

• organisms maintain stable environment

• Protects the outside of the cell.

• Majority of plasma membrane. Head/Tail

Multiple Choice

Which process involves the movement of water across a membrane?

• Diffusion

• Osmosis

• Solution

• Solute

Multiple Choice

Which vocabulary word describes the substance that dissolves in a solution?

• Solute

• Solvent

• Bilayer

• Homeostasis

Multiple Select

Select all the terms that refer to components of a solution.

• Solute

• Solvent

• Diffusion

• Osmosis

Multiple Choice

How do particles move during diffusion?

• They move from an area of high concentration to an area of low concentration.

• They move randomly without spreading out.

• They move only when stirred.

• They move towards the source of the particles.

Multiple Choice

Which direction do particles move in relation to the concentration gradient?

• Up the concentration gradient

• Down the concentration gradient

• In random directions

• They do not move

Multiple Choice

Which of the following statements about osmosis is correct?

• Osmosis is the movement of solute across a membrane.

• Osmosis is the movement of water across a membrane.

• Osmosis is the movement of air across a membrane.

• Osmosis is the movement of salt across a membrane.

Multiple Select

Select all the correct statements about the process of osmosis as shown in the diagram.

• Water moves from an area of high concentration to low concentration.

• Solute moves through the membrane.

• Water moves to level out concentrations.

• Osmosis occurs only in plant cells.

Draw

Draw a model of osmosis on the picture.

Multiple Choice

Which characteristic of life does osmosis best support?

• Homeostasis

• Growth and Development

• Composed of Cells

• Reproduction