Biology 0610 · IGCSE · Osmosis

Osmosis — practice question

Water enters and leaves cells by osmosis.
(a)[2]

State two plant cell structures through which water passes to reach the cytoplasm.

(b(i))[3]

From the information in Table 2.1, calculate the percentage change in mass for the potato cylinder in the 0.6 mol per dm$^3$ sucrose solution. Give your answer to two decimal places.

(b(ii))[1]

Describe the expected appearance of the potato cylinder after it has been placed in the 0.8 mol per dm$^3$ sucrose solution for 30 minutes.

(b(iii))[2]

Using the results in Table 2.1, describe how the sucrose solution concentration influences the percentage change in mass of the potato cylinders.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: the cell wall

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI