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WorksheetsDiffusion and Osmosis Movement in and out of cells
Total questions: 20
Worksheet time: 23mins
Define diffusion.
Diffusion is the net movement of molecules and ions from a region of higher concentration to a region of lower concentration.
Diffusion is the net movement of molecules and ions from a region of lower concentration to a region of higher concentration.
Diffusion is the net movement of molecules and ions from a region of better concentration to a region of worse concentration.
Diffusion is the net movement of molecules and ions from a region of hotter concentration to a region of colder concentration.
Which is NOT an example of diffusion?
carbon dioxide into the air spaces of a leaf
oxygen into an organism across a gas exchange surface
oxygen into a cell across its cell surface membrane
food into an organism across the lip barrier
If we increase the kinetic energy of molecules of a gas or a solution...
the rate of diffusion will decrease
the rate of diffusion will depreciate
the rate of diffusion will increase
the rate of diffusion will cease
Which is larger, a water molecule or a sugar molecule?
What is the meaning of "partially permeable" membrane?
A solution that has a high concentration of water molecules has...
great water potential
super water potential
high water potential
excellent water potential
What will happen if we put an animal cell in pure water?
water will move out of the cell by osmosis and cell will shrivel up
water will not move either way by osmosis and cell stays as is
water will move into the cell by osmosis and cell will swell and burst
water will move away by osmosis and cell will dry out and die
Which part of a plant cell is fully permeable?
nucleus
cytoplasm
cell wall
cell membrane
Which part of a cell is partially permeable?
cell wall
cell membrane
chloroplast
nucleus
What is the meaning of a "turgid" cell?
cell is swollen and firm
cell is sickly and weak
cell is tiny but strong
cell is shriveling up
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.
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
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
Water moves from a dilute solution in the soil into the cells of a plant's roots.
Diffusion
Osmosis
Neither
Saliva flows from the salivary glands into your mouth.
Diffusion
Osmosis
Neither
A spot of blue ink dropped into a glass of still water quickly colors all the water blue.
Diffusion
Osmosis
Neither
Carbon dioxide enters a plant's leaves when the plant is photosynthesising.
Diffusion
Osmosis
Neither
Draw an animal cell that has been put in pure water and indicate the net movement of water molecules with an arrow. Label with: high water potential, low water potential... Draw a cell that is either shriveled up or bursting.
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
Correct the mistake in this sentence.
Plant cells do not burst in pure water because the cell wall stops water from getting into the cell.
