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6. Active Transport involves the movement of substances from ..........................

  • a low concentration to a high concentration
  • a high concentration to a low concentration

7. What do the lungs exchange with the atmosphere?

  • Carbon Dioxide
  • Oxygen and Carbon Dioxide
  • Oxygen
  • Nitric Oxide
  • All of the above

8. Why is oxygen needed?

  • it is a waste product of respiration
  • for aerobic respiration
  • for anaerobic respiration
  • It isn

9. Why is Carbon Dioxide exchanged?

  • It isn
  • for aerobic respiration
  • it is a waste product of respiration
  • for anaerobic respiration

10. Why is Nitric Oxide exchanged?

  • it is a waste product of respiration
  • for aerobic respiration
  • It isn't
  • for anaerobic respiration

11. What gives the lungs a large surface area?

  • a sac
  • POTATO.
  • alveoli
  • villi

12. Give an adaptation of a villus for gas exchange

  • Thin walls
  • Golden brown skin
  • Large
  • Bumpy walls

13. Give another adaption for (answer to Q11)

  • Moist surface
  • Taste great roasted.
  • many different varieties.
  • Course skin.

14. Where does Oxygen diffuse into?

  • Back out into the lungs.
  • Capillaries surrounding (answer to Q11)
  • It isn
  • Veins surrounding (answer to Q11)
  • Arteries surrounding (answer to Q11)

15. Where does Nitric Oxide diffuse into?

  • It doesn't
  • Back out into the lungs.
  • Capillaries surrounding (answer to Q11)
  • Arteries surrounding (answer to Q11)
  • Veins surrounding (answer to Q11)

16. Where does Carbon Dioxide diffuse into?

  • Veins surrounding (answer to Q11)
  • It isn
  • Capillaries surrounding (answer to Q11)
  • Back out into the lungs.
  • Arteries surrounding (answer to Q11)

17. What is in the Thorax?

  • The lungs
  • All of the above
  • The heart
  • The gut

18. Where does the absorption of digested food take place?

  • The small Intestine and the capillaries
  • The small Intestine
  • The capillaries
  • The gut
  • The large Intestine

19. What is digested food absorbed by?

  • The liver
  • Capillaries in the villi
  • nothing.

20. What increases the surface area in the small intestine?

  • blood.
  • Villi.
  • alveoli.