Cell Membrane and Diffusion

What is diffusion?

• when molecules move 
• when molecules move from a high concentration to a low.
• no movement 
• molecules move everywhere

Where is there a low concentration of dye?

• at the bottom of cup
• in the color
• at the top of cup 
• no concenteraion gradient

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

Osmosis is the movement of _____ across a semi-permeable membrane.

• food

• salt

• air

• water

Tags

NGSS.MS-ESS2-4

During osmosis

• water moves from high to low concentration

• water moves from low to high concentration

• solutes move from high to low concentration

• solutes move from low to high concentration

Permeable means

• particles can pass through

• the concentration levels are different

• it is solid

• particles can not pass through

Where is there a high concentration of water?

• in the flower
• cannot be determined by picture.
• in the vase
• in the leaves

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of

• Osmosis
• Diffusion
• Equilibrium

If there is 5 percent solute inside a cell and 5 percent solute outside a cell

• more water will move inside the cell

• more water will move outside the cell

• There will be no net movement of water

• more solute will move inside the cell

• more solute will move outside the cell

Tags

NGSS.MS-LS1-2

Where will the water go?

• Into the cell

• Out of the cell

• Equally in & out - it's isotonic

• water doesn't move

Tags

NGSS.MS-LS1-2