Biology 0610: MOVEMENT IN AND OUT OF CELLS Topical Past Paper Questions

A student investigated osmosis in cylinders of potato tissue placed in different concentrations of salt solution. Water will move by osmosis into or out of cells, from an area of lower salt concentration to an area of higher salt concentration. Salt is a solute. If there is no di…

Fig. 2.1 shows red blood cells in three different concentrations of salt solution. Fig. 2.1 (a) (i) Using the information in Fig. 2.1, state the letter of the salt solution that has a concentration similar to blood plasma. Explain your choice. salt solution ..... (ii) Using the i…

(a) Fig. 2.1 shows epidermal cells from a red onion. magnification $ \times $340 Fig. 2.1 (i) Draw a large diagram of the cell labelled X in Fig. 2.1. [4] (ii) Line PQ on Fig. 2.1 represents the length of cell X. Measure the length of line PQ on Fig. 2.1. length of PQ ..... mm Ca…