Water Potential and Osmosis

Explain why a plant cell does not burst when we put it in pure water?

• The plant cell absorbs water by osmosis just like an animal cell, but the strong cellulose cell wall prevents it bursting.

• The plant cell absorbs water by osmosis just like an animal cell, but the strong nuclear force prevents it bursting.

• The plant cell absorbs water by osmosis just like an animal cell, but the strong cell membrane prevents it bursting.

• The plant cell absorbs water by osmosis just like an animal cell, but the strong cytoplasm glue prevents it bursting.

Tags

NGSS.MS-LS1-2

Plasmolysis is...

• the condition of an animal cell when it has lost so much water that the cytoplasm and vacuole have shrunk, pulling the cell membrane towards the center.

• the condition of an animal cell when it has gained so much water that the cytoplasm and vacuole have shrunk, pulling the cell membrane towards the center.

• the condition of a plant cell when it has gained so much water that the cytoplasm and vacuole have expanded, pushing the cell membrane towards the cell wall

• the condition of a plant cell when it has lost so much water that the cytoplasm and vacuole have shrunk, pulling the cell membrane away from the cell wall

Tags

NGSS.HS-LS1-3

Plasmolysis can be brought about by...

• putting a plant cell into a solution that is less concentrated than the cytoplasm and cell sap

• putting a plant cell into a solution that is more concentrated than the cytoplasm and cell sap

• putting an animal cell into a solution that is more concentrated than the cytoplasm and cell sap

• putting an animal cell into a solution that is less concentrated than the cytoplasm and cell sap

Correct the mistake in this sentence.

If Visking tubing containing a sugar solution is put into a beaker with pure water, the sugar solution moves out of the tubing by osmosis

What happens during osmosis?

• water molecules moves from high to low concentration without the use of energy

• water molecules moves from high to low concentration with the use of energy

• water molecules moves from high to low water potential without the use of energy

• water molecules move from high to low water potential with the use of energy

Which of the following substances passes through the plasma membrane   through the process of osmosis?

• glucose

• water

• protein

• sodium

As compared to a dilute sucrose solution, a concentrated sucrose solution

• has a water potential higher than the dilute sucrose solution.

• has a water potential lower than the dilute sucrose solution.

• has the same water potential of the dilute sucrose solution.

Which solution, the one on left or the one on right, has a higher water potenital?

• the one on the left

• the one on the right

Tags

NGSS.MS-ESS2-4

What causes water to enter plant roots from the soil?

• water potential in xylem is higher than the soil

• water potential in root hair cells is higher than the soil

• water potential in root hair cells is lower than the soil

• water potential in xylem is lower than the soil

Osmosis is the movement of _____________ across a partially permeable membrane.

• food molecules

• oxygen molecules

• water molecules

• energy