Lesson T1.1.4

T1.1.4 Diffusion in and between cells Quiz: KS3 Biology, Unit 1

20 questions

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Lesson T1.1.4, Diffusion in and between cells: 20 multiple choice questions for the KS3 Biology (National Curriculum), Unit 1: Structure and function of living organisms, written with Revision Ninja.

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The 20 questions

  1. What is the net movement of particles from high to low concentration?

    • Osmosis
    • Active transport
    • Diffusion
    • Respiration
  2. Does diffusion require energy from the cell?

    • Yes
    • Only in lungs
    • No
    • Only in cells
  3. Why does oxygen diffuse into a cell from the blood?

    • Active pumping
    • Higher concentration outside
    • Lower concentration outside
    • Cellular pressure
  4. Where is carbon dioxide concentration highest in a respiring cell?

    • In the blood
    • In the lungs
    • Outside the cell
    • Inside the cell
  5. Where does oxygen diffuse into the blood in humans?

    • Lungs
    • Kidneys
    • Stomach
    • Heart
  6. How does perfume spread evenly across a room?

    • Diffusion
    • Osmosis
    • Evaporation
    • Melting
  7. Which environmental change increases the rate of diffusion?

    • Higher temperature
    • Lower pressure
    • Higher pressure
    • Lower temperature
  8. Which factor increases the rate of diffusion across a cell boundary?

    • A smaller concentration difference
    • A longer diffusion distance
    • A thicker membrane
    • A larger surface area
  9. In which state of matter does diffusion occur the fastest?

    • Liquid
    • Plasma
    • Gas
    • Solid
  10. When does net diffusion across a cell membrane stop?

    • Zero concentration
    • Equal concentrations
    • Maximum pressure
    • Zero temperature
  11. What feature of villi helps increase the rate of food absorption?

    • Low blood supply
    • Active transport proteins
    • Thick cell walls
    • Large surface area
  12. Through which structures does oxygen diffuse into a leaf?

    • Root hairs
    • Guard cells
    • Xylem vessels
    • Stomata
  13. Which direction does carbon dioxide diffuse from a body cell into blood?

    • Cell into lung
    • Cell into blood
    • Blood into lung
    • Blood into cell
  14. How do sugar particles spread evenly in water without stirring?

    • Osmosis
    • Diffusion
    • Respiration
    • Active transport
  15. How does an increase in temperature affect particle movement in diffusion?

    • Particles get heavier
    • Particles stop moving
    • Particles move faster
    • Particles move slower
  16. Which substance enters or leaves a cell by simple diffusion?

    • Carbon dioxide
    • Starch granules
    • Solid bile salts
    • Cellulose fibres
  17. What effect does a steeper concentration gradient have on diffusion?

    • Faster movement
    • No movement
    • Slower movement
    • Reversed direction
  18. Which gas diffuses from the air into leaves for photosynthesis?

    • Oxygen
    • Water vapour
    • Carbon dioxide
    • Nitrogen
  19. Why is diffusion classified as a passive transport process?

    • Requires ATP directly
    • Uses active transport
    • Only happens in water
    • No energy needed
  20. Which membrane change would slow down the rate of diffusion?

    • Higher temperature
    • Steeper gradient
    • Increased surface area
    • Increased thickness

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