JAMB Biology questions

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

1. Question 261· Nutrition· JAMB

   Trypsin is secreted by the

   • Aliver
   • Bstomach
   • Csalivary glands
   • Dpancreas

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2. Question 262· Nutrition· JAMB

   Bile aids digestion by

   • Aemulsifying fats
   • Bdigesting proteins
   • Cabsorbing glucose
   • Dkilling bacteria

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   Explanation and discussion

3. Question 263· Nutrition· JAMB

   To show that a leaf has carried out photosynthesis, it is tested with iodine solution for

   • Aprotein
   • Bglucose
   • Cstarch
   • Dfat

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4. Question 264· Nutrition· JAMB

   Trypsin digests proteins in the

   • Aduodenum
   • Bmouth
   • Cstomach
   • Dlarge intestine

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5. Question 265· Nutrition· JAMB

   Villi are well adapted for absorption because they have

   • Afew blood vessels
   • Bthick walls
   • Ca thin lining, a rich blood supply and a large surface area
   • Da small surface area

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6. Question 266· Nutrition· JAMB

   The main function of the colon is the

   • Aabsorption of water
   • Bdigestion of protein
   • Csecretion of bile
   • Dabsorption of glucose

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7. Question 267· Nutrition· JAMB

   A lack of iron in the diet causes

   • Arickets
   • Bgoitre
   • Canaemia
   • Dberiberi

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8. Question 268· Nutrition· JAMB

   The light stage of photosynthesis produces

   • Aglucose directly
   • BATP, reduced NADP and oxygen
   • Ccarbon(IV) oxide
   • Dstarch

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9. Question 269· Nutrition· JAMB

   Which enzyme in saliva begins the digestion of starch?

   • Apepsin
   • Bptyalin (salivary amylase)
   • Clipase
   • Dtrypsin

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10. Question 270· Nutrition· JAMB

    Carnassial teeth are characteristic of

    • Acarnivores
    • Bherbivores
    • Comnivores
    • Drodents

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11. Question 271· Nutrition· JAMB

    The enzyme that begins the digestion of proteins in the stomach is

    • Amaltase
    • Bamylase
    • Clipase
    • Dpepsin

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12. Question 272· Nutrition· JAMB

    Cows digest cellulose with the help of

    • Apepsin
    • Bstrong teeth alone
    • Cbile
    • Dmicroorganisms in the rumen

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13. Question 273· Nutrition· JAMB

    Insectivorous plants such as the pitcher plant trap insects mainly to obtain

    • Awater
    • Bnitrogen
    • Ccarbohydrates
    • Doxygen

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14. Question 274· Nutrition· JAMB

    In photosynthesis, oxygen is released from the splitting of:

    • Acarbon dioxide
    • Bwater
    • Cglucose
    • Dchlorophyll

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15. Question 275· Nutrition· JAMB

    The vitamin needed for normal blood clotting is

    • Avitamin C
    • Bvitamin A
    • Cvitamin K
    • Dvitamin D

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16. Question 276· Nutrition· JAMB

    The mineral element that forms part of the chlorophyll molecule is

    • Amagnesium
    • Biron
    • Ccalcium
    • Dpotassium

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17. Question 277· Nutrition· JAMB

    The villi in the ileum increase absorption of digested food mainly by

    • Astoring food
    • Bproducing enzymes
    • Cincreasing the surface area
    • Dslowing down peristalsis

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18. Question 278· Nutrition· JAMB

    Kwashiorkor is caused by a lack of

    • Aiodine
    • Bvitamin C
    • Ciron
    • Dprotein

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    Explanation and discussion

19. Question 279· Nutrition· JAMB

    Bile is produced by the

    • Aliver
    • Bgall bladder
    • Cpancreas
    • Dstomach

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20. Question 280· Nutrition· JAMB

    Which of the following feeds parasitically?

    • Amaize
    • Bmushroom
    • Ctapeworm
    • Dgoat

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    Explanation and discussion