IGCSE biology- Movement in and out of cell

The diagram shows apparatus which can be used to demonstrate osmosis.

After one hour, what would happen to the liquid levels in the glass tubes?

• Level in 1 would fall; Level in 2 would fall

• Level in 1 would fall; Level in 2 would rise

• Level in 1 would rise; Level in 2 would fall

• Level in 1 would rise; Level in 2 would rise

Tags

NGSS.MS-LS1-2

The data show the results of an investigation on osmosis using sticks of potato.

Which statements explain this change in length?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-1

The diagram shows two cells. The net movement of water is from cell X to cell Y.

What causes water to pass from cell X to cell Y?

• water potential is higher in cell X and active transport occurs

• water potential is higher in cell X and osmosis occurs

• water potential is lower in cell X and active transport occurs

• water potential is lower in cell X and osmosis occurs

The diagram shows a plant cell which has lost water to its surroundings by osmosis.

Which part is the partially permeable membrane?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-2

What would lead to a decrease in diffusion rate into a cell?

• greater concentration gradient

• higher temperature

• larger surface area of cell

• thicker cell wall

Which diagram represents a typical plant cell?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The diagram shows part of a plant root in the soil. The root is absorbing water.

At which labelled point is the water potential highest?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-1

The diagram shows two solutions that are separated by a partially permeable membrane.

In which direction will most water molecules move in relation to their concentration gradient?

• from X to Y against their concentration gradient

• from X to Y down their concentration gradient

• from Y to X against their concentration gradient

• from Y to X down their concentration gradient

Which statement describes active transport?

• the movement of ions through proteins in a cell membrane, releasing energy

• the movement of ions through proteins in a cell membrane, using energy

• the movement of water through lipids in a cell membrane, releasing energy

• the movement of water through lipids in a cell membrane, using energy

The diagram represents two liquids, separated by a membrane through which osmosis can occur.

Which statement describes how the molecules will move?

• Molecules of dissolved substance move from left to right.

• Molecules of dissolved substance move from right to left.

• Overall, water molecules move from left to right.

• Overall, water molecules move from right to left.