Back to the lesson and practice
ActivityPractice worksheet
Do it🖨️ On paper✏️ On screen
New copyMake a new one

Works with a finger, a stylus or a mouse. Nothing is saved or sent anywhere.

Write your answers with a finger, mouse or stylus. Switch to Scroll to move around the page. A stylus always writes.

eurekami

Surface area to volume ratio and exchange

8th grade (Year 9 in England) · 16 questions · Common Core: NGSS.HS-LS1-2, NGSS.SEP 5 · England: GCSE Combined Science: Cell biology (exchange surfaces)

Name

Date

Score/ 16

  1. Question 1

    A cube-shaped cell model has sides of 6 cm. What is its surface area to volume ratio, written as ? : 1?

    Answer

  2. Question 2

    Exchange surfaces: which statement is NOT true?

    • A. Fish gills have many thin filaments to increase surface area.
    • B. Large animals need transport systems to reach all their cells.
    • C. Villi increase the surface area of the small intestine.
    • D. Thick walls make exchange surfaces work better.

  3. Question 3

    Why are the alveoli in the lungs so numerous and tiny?

    • A. to give a huge surface area for gas exchange
    • B. to store air for later
    • C. to make the lungs heavier
    • D. to filter out food

  4. Question 4

    A cube-shaped cell model has sides of 4 cm. What is its surface area to volume ratio, written as ? : 1?

    Answer

  5. Question 5

    Exchange surfaces: which statement is NOT true?

    • A. A larger cube has a larger surface area to volume ratio.
    • B. Villi increase the surface area of the small intestine.
    • C. Large animals need transport systems to reach all their cells.
    • D. Fish gills have many thin filaments to increase surface area.

  6. Question 6

    Which feature does NOT increase the effectiveness of an exchange surface?

    • A. a thick wall
    • B. a good blood supply
    • C. being ventilated
    • D. a large surface area

  7. Question 7

    A cube-shaped cell model has sides of 6 cm. What is its surface area to volume ratio, written as ? : 1?

    Answer

  8. Question 8

    Exchange surfaces: which statement is NOT true?

    • A. Large animals need transport systems to reach all their cells.
    • B. Fish gills have many thin filaments to increase surface area.
    • C. Smaller objects have a larger surface area to volume ratio.
    • D. Single-celled organisms need lungs.

  9. Question 9

    Why does a large multicellular animal need lungs and a heart, but an amoeba does not?

    • A. Amoebae are not alive
    • B. Diffusion is faster in big animals
    • C. Large animals do not use oxygen
    • D. Its small SA:V ratio and long distances mean diffusion alone is too slow

  10. Question 10

    A cube-shaped cell model has sides of 5 cm. What is its surface area to volume ratio, written as ? : 1?

    Answer

  11. Question 11

    Exchange surfaces: which statement is NOT true?

    • A. Fish gills have many thin filaments to increase surface area.
    • B. Villi increase the surface area of the small intestine.
    • C. Single-celled organisms need lungs.
    • D. Large animals need transport systems to reach all their cells.

  12. Question 12

    An elephant has a much smaller surface area to volume ratio than a mouse. What problem does this cause?

    • A. Moving too fast
    • B. Getting too little food
    • C. Losing heat quickly enough
    • D. Losing heat too quickly

  13. Question 13

    A cube-shaped cell model has sides of 6 cm. What is its surface area to volume ratio, written as ? : 1?

    Answer

  14. Question 14

    Exchange surfaces: which statement is NOT true?

    • A. Fish gills have many thin filaments to increase surface area.
    • B. Villi increase the surface area of the small intestine.
    • C. Large animals need transport systems to reach all their cells.
    • D. A larger cube has a larger surface area to volume ratio.

  15. Question 15

    Which feature does NOT increase the effectiveness of an exchange surface?

    • A. being ventilated
    • B. a good blood supply
    • C. a large surface area
    • D. a thick wall

  16. Question 16

    A cube-shaped cell model has sides of 6 cm. What is its surface area to volume ratio, written as ? : 1?

    Answer

Write your answers right on the page. · Free from eurekami.com

All done? Check your answers
  1. 1
  2. Thick walls make exchange surfaces work better.
  3. to give a huge surface area for gas exchange
  4. 1.5
  5. A larger cube has a larger surface area to volume ratio.
  6. a thick wall
  7. 1
  8. Single-celled organisms need lungs.
  9. Its small SA:V ratio and long distances mean diffusion alone is too slow
  10. 1.2
  11. Single-celled organisms need lungs.
  12. Losing heat quickly enough
  13. 1
  14. A larger cube has a larger surface area to volume ratio.
  15. a thick wall
  16. 1