JAMB and WAEC Biology questions: Respiration

55 questions with answers and explanations. Tap an option to check yourself.

1. Question 1· Respiration· JAMB

   Anaerobic respiration in yeast produces:

   • Alactic acid only
   • Bethanol and carbon dioxide
   • Cwater and oxygen
   • Dglucose

   Show answer

   Explanation and discussion

2. Question 2· Respiration· JAMB

   In flowering plants, gaseous exchange takes place mainly through

   • Astomata and lenticels
   • Broot hairs only
   • Cthe xylem
   • Dthe flowers

   Show answer

   Explanation and discussion

3. Question 3· Respiration· WAEC

   The respiratory surface of an insect is formed by the

   • Agills
   • Btracheoles
   • Clungs
   • Dmoist skin

   Show answer

   Explanation and discussion

4. Question 4· Respiration· JAMB

   Complete aerobic respiration of one glucose molecule yields about

   • A2 ATP
   • B38 ATP
   • C100 ATP
   • D6 ATP

   Show answer

   Explanation and discussion

5. Question 5· Respiration· JAMB

   Complete aerobic respiration of one molecule of glucose produces about

   • A6 molecules of ATP
   • B2 molecules of ATP
   • C100 molecules of ATP
   • D38 molecules of ATP

   Show answer

   Explanation and discussion

6. Question 6· Respiration· JAMB

   Gaseous exchange in the mammalian lung takes place in the:

   • Atrachea
   • Bbronchi
   • Cpleura
   • Dalveoli

   Show answer

   Explanation and discussion

7. Question 7· Respiration· JAMB

   The alveoli are efficient for gaseous exchange because they

   • Acontain no capillaries
   • Bhave thick walls
   • Care dry
   • Dhave thin, moist walls and a rich blood supply

   Show answer

   Explanation and discussion

8. Question 8· Respiration· JAMB

   The respiratory surface of an earthworm is its

   • Agills
   • Blungs
   • Cmoist skin
   • Dtracheae

   Show answer

   Explanation and discussion

9. Question 9· Respiration· WAEC

   Gaseous exchange in fish takes place through the

   • Agills
   • Blungs
   • Cskin only
   • Dswim bladder

   Show answer

   Explanation and discussion

10. Question 10· Respiration· WAEC

    During a sprint, lactic acid builds up in the leg muscles because

    • Athe oxygen supply is too small for aerobic respiration
    • Bthe glucose runs out
    • Ccarbon(IV) oxide is absorbed
    • Dthe muscles stop working

    Show answer

    Explanation and discussion

11. Question 11· Respiration· JAMB

    During vigorous exercise, anaerobic respiration in human muscles produces

    • Alactic acid
    • Bethanol
    • Cglucose
    • Doxygen

    Show answer

    Explanation and discussion

12. Question 12· Respiration· JAMB

    Fish exchange gases through their

    • Alungs
    • Bgills
    • Cskin only
    • Dswim bladder

    Show answer

    Explanation and discussion

13. Question 13· Respiration· WAEC

    Dough rises during bread-making because of

    • Asteam only
    • Boxygen released by the flour
    • Ccarbon(IV) oxide released by yeast
    • Dnitrogen from the air

    Show answer

    Explanation and discussion

14. Question 14· Respiration· JAMB

    Insects exchange gases through

    • Agills
    • Ba system of tracheae opening at spiracles
    • Clungs
    • Dthe skin only

    Show answer

    Explanation and discussion

15. Question 15· Respiration· WAEC

    Anaerobic respiration in muscles produces

    • Alactic acid
    • Bethanol
    • Coxygen
    • Dcarbon dioxide only

    Show answer

    Explanation and discussion

16. Question 16· Respiration· JAMB

    Which word equation represents aerobic respiration?

    • Aglucose + oxygen → carbon(IV) oxide + water + energy
    • Bcarbon(IV) oxide + water → glucose + oxygen
    • Cglucose → lactic acid + energy
    • Dglucose → ethanol + carbon(IV) oxide

    Show answer

    Explanation and discussion

17. Question 17· Respiration· JAMB

    Anaerobic respiration in yeast is also called

    • Atranspiration
    • Bphotosynthesis
    • Cfermentation
    • Ddigestion

    Show answer

    Explanation and discussion

18. Question 18· Respiration· WAEC

    During expiration in humans, the diaphragm

    • Arelaxes and becomes dome-shaped
    • Bcontracts and flattens
    • Cmoves downwards
    • Ddoes not move

    Show answer

    Explanation and discussion

19. Question 19· Respiration· JAMB

    The volume of air breathed in or out in one normal breath is the

    • Aresidual volume
    • Bvital capacity
    • Ctidal volume
    • Dtotal lung capacity

    Show answer

    Explanation and discussion

20. Question 20· Respiration· WAEC

    Which of these gives off the most energy per gram when respired?

    • Avitamin
    • Bcarbohydrate
    • Cprotein
    • Dfat

    Show answer

    Explanation and discussion