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Chapter 2 Practice Paper: Transport in cells — question paper

QuizQuipPractice Series
QQ/GCSE-BIO/CH2

GCSE (9–1) · GCSE Biology (Foundation and Higher)

Chapter 2 Practice Paper

Transport in cells

Duration: 40 minutes
Total: 30 marks
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READ THESE INSTRUCTIONS FIRST

  • Answer all questions.
  • Section A contains ten multiple-choice questions. Choose one answer, A, B, C or D, for each.
  • Section B contains structured questions. Write your answers in the spaces provided.
  • You may use a calculator.
  • The number of marks is given in brackets [ ] at the end of each question or part question.
  • The total mark for this paper is 30.

Original practice material written for the MOE GCSE Biology syllabus. It is not an official MOE or school examination paper. Chapter 2: diffusion and its rate factors, surface area to volume ratio and exchange surfaces, osmosis and the plant-tissue required practical with percentage-change calculations, and active transport.

For Examiner’s Use
Section A/ 10
Section B/ 20
Total/ 30

Section A: Multiple-choice questions[10 marks]

Choose one answer for each question. Each question is worth 1 mark.

  1. 1

    The net movement of particles from a higher to a lower concentration is called

    1. Aactive transport
    2. Bosmosis
    3. Cdiffusion
    4. Drespiration
    ( )
  2. 2

    Which waste substance leaves body cells and enters the blood plasma by diffusion?

    1. Aurea
    2. Boxygen
    3. Cglycogen
    4. Dstarch
    ( )
  3. 3

    The rate of diffusion increases when

    1. Athe concentration gradient becomes shallower
    2. Bthe temperature falls
    3. Cthe membrane gets thicker
    4. Dthe surface area gets bigger
    ( )
  4. 4

    A cube-shaped cell has sides of 4 mm. Its volume is

    1. A12 mm³
    2. B64 mm³
    3. C48 mm³
    4. D16 mm³
    ( )
  5. 5

    A plant cell has taken in water until its wall pushes back on the contents. The cell is

    1. Aplasmolysed
    2. Bburst
    3. Cturgid
    4. Dshrunken
    ( )
  6. 6

    A partially permeable membrane lets through

    1. Awater molecules but holds back larger dissolved molecules
    2. Bevery molecule equally
    3. Conly dissolved sugars
    4. Dnothing at all
    ( )
  7. 7

    A chip loses 0.9 g from a starting mass of 3.6 g. Its percentage change in mass is

    1. A+25%
    2. B+4%
    3. C−4%
    4. D−25%
    ( )
  8. 8

    The energy for active transport is released by

    1. Aphotosynthesis
    2. Brespiration
    3. Cevaporation
    4. Ddigestion
    ( )
  9. 9

    Mineral ions enter root hair cells from dilute soil solutions by

    1. Aosmosis
    2. Bdiffusion
    3. Cactive transport
    4. Dtranspiration
    ( )
  10. 10

    Fish gills and human alveoli are both

    1. Athin, with a large surface area and a rich blood supply
    2. Bthick, dry and well insulated
    3. Cimpermeable to gases
    4. Dthe same size in every animal
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

  1. 11

    Oxygen moves from the air inside an alveolus into the blood.

    1. (a)

      Name the process by which the oxygen crosses the alveolus wall.

      [1]
    2. (b)

      Explain two features of the alveoli that make this movement fast.

      [4]
  2. 12

    Two potato chips were used in an osmosis investigation.

    Results

    ChipStarting massFinal massSolution
    A4.8 g4.2 g1.0 mol/dm³ sugar
    B5.0 g6.0 gdistilled water
    1. (a)

      For chip A, work out the change in mass and express it as a percentage of the starting mass.

      [2]
    2. (b)

      State which way water moved in chip A and explain why.

      [1]
    3. (c)

      Do the same percentage calculation for chip B.

      [2]
    4. (d)

      Name the process responsible for both mass changes.

      [1]
  3. 13

    Cells lining the small intestine take up glucose continuously during digestion.

    1. (a)

      Define active transport.

      [2]
    2. (b)

      Explain why these cells contain many mitochondria.

      [2]
    3. (c)

      Name one other substance absorbed into the blood by active transport anywhere in a plant or animal.

      [1]
  4. 14

    The lining of the small intestine is folded into millions of villi.

    1. (a)

      State what effect the villi have on the surface area of the intestine.

      [1]
    2. (b)

      Explain how this speeds up absorption.

      [2]
    3. (c)

      Name one other feature of the villi that helps absorption.

      [1]

— End of paper —