IGCSEScienceCambridge (CIE)Combined ScienceBiologyExam Questions3. Movement into & out of CellsDiffusion, Osmosis & Active Transport

Diffusion, Osmosis & Active Transport (Cambridge (CIE) IGCSE Combined Science: Biology): Exam Questions

Exam code: 0653

3 mins3 questions
1
1 mark

The diagram shows an uncooked potato being used in an experiment. The skin of the potato was removed as shown.

Diagram of a skinned potato cylinder in water, hollowed at the top and filled with concentrated sugar solution, labelled to illustrate osmosis.

The experiment was left for a few hours.

Which diagram shows the result?

Four side‑view diagrams of a U‑shaped container in water, labelled A–D, showing different levels of sand gradually filling the central cavity.

    Choose your answer

    2
    1 mark

    Which factor would decrease the rate of diffusion from a plant cell?

    • high temperature

    • large surface area

    • small concentration gradient

    • small diffusion distance

    Choose your answer

    3
    1 mark

    The diagram shows a root hair cell.

    Line diagram of a plant root hair cell extending into soil, with labelled arrows pointing to its thin wall, large vacuole and surrounding mineral ions

    Which type of transport is shown by the arrows in this diagram?

    • active transport

    • diffusion

    • osmosis

    • xylem transport

    Choose your answer