Osmosis, Diffusion, and Active Transport

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

Robert sprays water on the veggies in the produce section to “plump them up”. Is this diffusion, osmosis or active transport?

• diffusion

• osmosis

• active transport

Jackson is growing a bean plant in a pot. One day he notices the plant is wilting. He waters it and notices that even within a few minutes, it begins to perk up. This is because the plant has taken water into its central vacuoles through osmosis. At what level does osmosis occur?

• organs

• tissues

• cells

• organ systems

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5

If salt is poured onto a slice of eggplant, what do you predict will happen?

• Water will move out of the eggplant cells and the cells will shrink.

• Water will move out of the eggplant cells and the cells will swell.

• Water will move into the eggplant cells and the cells will swell.

Tags

NGSS.MS-LS1-1

What will happen to an animal cell that is placed in pure water?

• The cell will become plasmolyzed.

• Water from inside the cell will go into the pure water outside of the cell.

• It will swell and remain turgid as long as it is in the water.

• It will eventually swell due to the high water intake until it bursts.

Tags

NGSS.MS-LS1-2

Special transport proteins in the cell membrane carry out active transport. How are molecules transported through the protein pumps?

• The molecules are sucked in automatically through the transport proteins.

• The transport proteins change shape to push the molecules through the membrane of the cell.

• The protein pumps have characteristics which attract molecules from the outside of the cell.

• They just naturally occur without any efforts.

The diffusion of water across a membrane is called

• equilibrium.

• osmosis.

• facilitated diffusion.

• active transport.

Why do animal cells burst in pure water solutions but the plant cells do not?

• Animals cells are weak.

• Plant cells have a cell wall to prevent bursting.

• Plant cells are stronger than animal cells.

• This is something that just naturally happens.

What happened to the CELL WALL and the CELL MEMBRANE in these plant cells?

• Both the CELL WALL and CELL MEMBRANE shrunk

• Only the CELL WALL shrunk, the CELL MEMBRANE stayed the same

• The CELL WALL stayed the same, only the CELL MEMBRANE shrunk

• Both the CELL WALL and CELL MEMBRANE stayed the same

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is DIFFUSION?

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Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-3