The newest 13 of 13 written questions. Open one to see it on the real paper.
Fig. 1.2 shows two of the same plant cells, one immersed in pure water (water with no chemical impurities) and the other immersed in concentrated salt solution. cell membrane cytoplasm vacuole cell immersed in pure water cell immersed in concentrated salt solution Fig. 1.2 Complete Fig. 1.2 to show the contents of the...
See it on the paper →Explain the observation seen at 10.0 g / dm 3 in Table 10.1. ,
See it on the paper →Complete the sentences to describe the effect of immersion in pure water on the plant cell in Fig. 1.2. Use words or phrases from the list. Each word or phrase may be used once, more than once or not at all. amino acids osmosis assimilation partially permeable vacuole glucose respiration water There is an increase in t...
See it on the paper →State the name of the effect shown by the change in appearance of the cells.
See it on the paper →Identify all the sugar solutions where the potato cubes lose mass.
See it on the paper →Calculate the change in length of the potato strip in water. mm
See it on the paper →Describe and explain the appearance of the cell shown in Fig. 1.1.
See it on the paper →Many candidates recognised that the vacuole would appear smaller. Fewer were able to draw the detachment of the cell membrane from the cell wall.
— Examiner report, May/June 2025, 0654/42 Q1(d) (Cambridge)
Many candidates gained full marks. Vacuole and osmosis were the least known terms.
— Examiner report, February/March 2024, 0654/32 Q1(b)(ii) (Cambridge)
This question asked for the name of the effect rather than the process. Few candidates stated plasmolysis, with a large number giving osmosis.
— Examiner report, February/March 2022, 0654/42 Q10(a)(i) (Cambridge)
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Suggest which concentration of sugar solution in Table 1.1 this cell was immersed in. concentration = mol dm –3
Describe the change seen to the plant cells placed in beaker A in Table 7.1.
See it on the paper →Suggest which beaker contains the solution with the same concentration as the plant cells. Give a reason for your answer. beaker
See it on the paper →On Fig. 7.2, draw lines to link each concentration of sugar solution to the final appearance of the plant cell.
See it on the paper →Suggest which plant cell, A, B, C or D, was placed in a solution of the same concentration as the plant cell.
See it on the paper →The importance of water for plant survival.
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