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WorksheetsCoordinated biology IGCSE 2.2 - Osmosis and diffusion
Total questions: 14
Worksheet time: 14mins
Boiling potatoes destroys their cell membranes. A peeled, boiled potato strip is placed in a concentrated solution of salts. What takes place?
Osmosis and the diffusion of the solute
Osmosis but no diffusion of the solute
Diffusion of the solute but no osmosis
Neither diffusion of solute nor osmosis
The diagram shows the cells in the epidermis of a leaf. Which parts are partially permeable?
P and Q
Q and R
R and S
P and S
The diagram represents two liquids separated by a membrane through which osmosis can occur. What movement of molecules will occur.
Molecules of the 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
The diagram shows a plant cell before and after being placed in liquid X for 30 minutes, and an animal cell before and after being placed in liquid Y for 30 minutes. What describes liquids X and Y?
X: Concentrated solution, Y: Concentrated solution
X: Concentrated solution, Y: Pure water
X: Pure water, Y: Concentrated solution
X: Pure water, Y: Pure water
Which diagram shows the appearance of a plant cell after it is placed in distilled water.
A
B
C
D
Which diagram shows the appearance of a plant cell several minutes after it has been placed in a concentrated solution of sugar?
A
B
C
D
The diagram shows a plant cell that has been placed in a concentrated solution for 30 minutes.What identifies X and Y?
X: cell membrane, Y: air
X: cell membrane, Y: concentrated solution
X: cell wall, Y: air
X: cell wall, Y: concentrated solution
The diagram shows an experiment using a potato. Which shows the result after 24 hours?
A
B
C
D
The diagram shows a freshly cut potato strip, a strip suspended in liquid X and one suspended in liquid Y. What identifies the liquids?
X: Concentrated sugar solution, Y: very dilute sugar solution
X: pure water, Y: dilute sugar solution
X: Dilute sugar solution, Y: Concentrated sugar solution
X: pure water, Y: concentrated sugar solution
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 the water potential gradient
From X to Y down the water potential gradient
From Y to X against the water potential gradient
From Y to X down the water potential gradient
A red blood cell is placed in a concentrated sugar soution. What happens and why?
The cell bursts as sugar molecules diffuse into it.
The cell bursts because the concentrated sugar solution enters it.
The cell shrinks because the sugar molecules leave it
The cell shrinks because the water leaves it
Which liquid has a higher water potential?
A dilute sucrose solution
A concentrated salt solution
A concentrated sugar solution
A very concentrated salt solution
Which liquid has a lower water potential?
Distilled water
A dilute sugar solution
A concentrated sugar solution
A very concentrated sugar solution
Two beakers contain 50 cm3 of water. Beaker A has 1 g of salt added to it. Beaker B has 2 g of salt added to it. Which statements correctly compare the beakers?
Beaker A is more concentrated than beaker B
Beaker A is less concentrated than beaker B
Beaker A is more dilute than beaker B
Beaker A has a higher water potential than beaker B
Beaker A has a lower water potential than beaker B
