Diffusion & Transport

What is diffusion?

• Molecules moving from high to low concentration

• Molecules moving from low to high concentration

• Movement of molecules involving the use of energy

• Movement of molecules which does not require energy

What is osmosis?

• movement of salt molecules

• movement of water molecules

• movement of gas molecules

• when there is no particle movement of any kind

Tags

NGSS.MS-LS1-2

If a membrane is selectively permeable, then it...

• will allow ALL molecules to pass through

• will allow SOME molecules to pass through

• will allow NO molecules to pass through

Tags

NGSS.MS-LS1-2

When water rushes into or out of a plant cell, what cell part helps to maintain the cell shape?

• cell membrane

• cytoplasm

• vacuole

• cell wall

Tags

NGSS.MS-LS1-2

Which diagram shows what will happen to an animal cell placed in a saltwater solution?

• A) A

• B) B

• C) C

Tags

NGSS.MS-LS1-5

This part of a cell is what controls the movement of some materials into and out of the cell.

• cell membrane

• cytoplasm

• vacuole

• cell wall

Tags

NGSS.MS-LS1-2

What will most likely happen to a plant cell if it is placed in a solution with a lower water concentration than inside the cell?

• It will swell and burst.

• It will shrink as water leaves the cell.

• It will remain unchanged.

• It will divide rapidly.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

Which of the following is NOT an example of passive transport?

• simple diffusion

• facilitated diffusion

• osmosis

• active transport

ATP is most likely being used for ___.

• substance A to enter the cell

• substance B to enter the cell

• both substances (A and B) to enter the cell

Tags

NGSS.HS-LS1-7

A cell and the environment it is in are at equilibrium when ___.

• the water concentration on the outside of cell is greater

• the water concentration on the inside of cell is greater

• the water concentrations on both sides of the membrane are equal