Biology – Cambridge IGCSE: Movement in and out of Cells
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Question 1 of 20
1. Question
1 point(s)Which processes produce a continuous space for the flow of water in xylem vessels?
break down of the
cell walls between
adjacent cellsremoval of the
cytoplasm in
each cellA yes yes B yes no C no yes D no no CorrectIncorrect -
Question 2 of 20
2. Question
1 point(s)The diagram shows a fish in a pond.
Why does oxygen diffuse from the air into the water before reaching the fish?CorrectIncorrect -
Question 3 of 20
3. Question
1 point(s)Which structure provides the best surface for diffusion?
CorrectIncorrect -
Question 4 of 20
4. Question
1 point(s)The diagram shows a plant cell.
What is the appearance of this cell after it has been placed in pure water for 30 minutes?
CorrectIncorrect -
Question 5 of 20
5. Question
1 point(s)A student cuts out four pieces of carrot root of equal size. The pieces are treated as shown in the diagram, and then left for two hours.
After two hours, which piece of carrot will be the smallest?
CorrectIncorrect -
Question 6 of 20
6. Question
1 point(s)The diagram shows a plant cell which has lost water to its surroundings by osmosis.
Which part is the partially permeable membrane?
CorrectIncorrect -
Question 7 of 20
7. Question
1 point(s)What would lead to a decrease in diffusion rate into a cell?
CorrectIncorrect -
Question 8 of 20
8. Question
1 point(s)Different factors affect the rate of diffusion of molecules across a membrane.
Which row represents changes to factors that will increase the rate of diffusion?concentration
gradient across
a membranethickness
of membranesurface area
of membranetemperature A decrease decrease increase increase B decrease increase increase decrease C increase decrease increase increase D increase increase decrease decrease CorrectIncorrect -
Question 9 of 20
9. Question
1 point(s)A red blood cell and a palisade mesophyll cell are placed in a solution which has a higher water potential than the cells.
What will happen to each cell?red blood cell palisade
mesophyll cellA bursts bursts B bursts gains mass C loses mass gains mass D loses mass loses mass CorrectIncorrect -
Question 10 of 20
10. Question
1 point(s)What would increase the rate of diffusion of oxygen into an animal cell?
CorrectIncorrect -
Question 11 of 20
11. Question
1 point(s)Three equally sized pieces of potato were put into different concentrations of sucrose solution.
One piece of potato was put into distilled water.
The concentrations of sucrose solution were 0.2 gdm–3, 0.4 gdm–3 and 0.6 gdm–3.
The graph shows the change in mass of the potato pieces over a period of 60 minutes.
Which piece of potato was put into distilled water?
CorrectIncorrect -
Question 12 of 20
12. Question
1 point(s)Four freshly cut potato cylinders were soaked for one hour in different salt solutions before being pinned to cork blocks. Two of the blocks are shown.
Which solution would cause the potato cylinder to be most flaccid?CorrectIncorrect -
Question 13 of 20
13. Question
1 point(s)The diagram shows a plant cell after it has been submerged in a solution, P, for 20 minutes.
Which row describes the water potential of solution P and the condition of the cell?water potential of solution P condition of the cell A higher than the cell sap in the vacuole plasmolysed and turgid B higher than the cell sap in the vacuole under high turgor pressure C lower than the cell sap in the vacuole plasmolysed and flaccid D the same as the cell sap in the vacuole under low turgor pressure CorrectIncorrect -
Question 14 of 20
14. Question
1 point(s)Which process is involved in the uptake of glucose by the epithelial cells of kidney tubules?
CorrectIncorrect -
Question 15 of 20
15. Question
1 point(s)Red blood cells were placed in pure water.
Movement of water across the cell membrane caused a change in their appearance.
What caused this change in appearance?direction of
water movementfrom higher to lower
water potentialfrom lower to higher
water potentialA into cells yes no B into cells no yes C out of cells yes no D out of cells no yes CorrectIncorrect -
Question 16 of 20
16. Question
1 point(s)Some examples of substances moving across membranes are listed.
- glucose molecules into the epithelium that lines the small intestine
- nitrate ions from a dilute solution in soil into a more concentrated solution in root hair
cells - water molecules from mesophyll cells into the air spaces of a leaf
For which must oxygen be present?
CorrectIncorrect -
Question 17 of 20
17. Question
1 point(s)The diagram shows an experiment kept at room temperature.
What is present in the water surrounding the membrane after 45 minutes?CorrectIncorrect -
Question 18 of 20
18. Question
1 point(s)What is an example of diffusion?
CorrectIncorrect -
Question 19 of 20
19. Question
1 point(s)Which process depends on active transport?
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Question 20 of 20
20. Question
1 point(s)Osmosis is defined as the diffusion of water molecules
CorrectIncorrect
