Cells & Movement In and Out of Cells

Question 1

A student investigated osmosis in carrot cells. She cut carrot strips of equal size and placed them in five solutions of different sucrose concentrations. After 40 minutes she measured the mass of each strip. Table 1.1 shows the results.

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Question 2

Fig. 2.1 shows a cross-section of a root hair cell and the surrounding soil solution.

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Question 3

Fig. 3.1 shows a diagram of cell membranes between two cells, P and Q, in a plant leaf. The arrows show the net direction of water movement.

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Question 4

Table 4.1 summarises key features of diffusion, osmosis and active transport.

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