JAMB Biology questions: Cellular activities

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

1. Question 1· Cellular activities· JAMB

   How many daughter cells are produced when one cell divides by meiosis?

   • A4
   • B2
   • C1
   • D8

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2. Question 2· Cellular activities· JAMB

   Pinocytosis is the uptake of

   • Agases
   • Bsolid particles
   • Cliquid droplets by a cell
   • Dlight

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3. Question 3· Cellular activities· JAMB

   Crossing over takes place during

   • Amitosis
   • Bprophase I of meiosis
   • Cmetaphase II of meiosis
   • Dinterphase

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4. Question 4· Cellular activities· JAMB

   Root hair cells take up mineral ions from a dilute soil solution mainly by

   • Aosmosis
   • Bactive transport
   • Cdiffusion only
   • Dphagocytosis

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5. Question 5· Cellular activities· JAMB

   In which stage of mitosis do the chromosomes line up at the equator of the spindle?

   • Aanaphase
   • Bprophase
   • Cmetaphase
   • Dtelophase

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6. Question 6· Cellular activities· JAMB

   The number of chromosomes in a human gamete is

   • A22
   • B46
   • C92
   • D23

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7. Question 7· Cellular activities· JAMB

   Which of the following cells are haploid?

   • Askin cells
   • Bgametes
   • Cmuscle cells
   • Dliver cells

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8. Question 8· Cellular activities· JAMB

   Pepsin works best in

   • Aalkaline conditions
   • Bacidic conditions
   • Cneutral conditions
   • Dthe mouth

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9. Question 9· Cellular activities· JAMB

   Active transport differs from diffusion because active transport

   • Auses energy to move substances against a concentration gradient
   • Bneeds no energy
   • Coccurs only in gases
   • Dmoves substances from high to low concentration

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10. Question 10· Cellular activities· JAMB

    A red blood cell placed in distilled water will

    • Ashrink
    • Bswell and burst
    • Cstay the same
    • Dbecome plasmolysed

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11. Question 11· Cellular activities· JAMB

    Mitosis produces

    • Acells with double the number of chromosomes
    • Bfour cells with half the number of chromosomes
    • Cgametes only
    • Dtwo daughter cells with the same number of chromosomes as the parent

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12. Question 12· Cellular activities· JAMB

    DNA is replicated during

    • Aanaphase
    • Bmetaphase
    • Cinterphase
    • Dtelophase

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13. Question 13· Cellular activities· JAMB

    

    In the experiment shown, the level of liquid in the tube rises because

    • Asugar moves out into the water by diffusion
    • Bwater enters the sugar solution through the membrane by osmosis
    • Cthe water in the beaker is heated
    • Dair pressure pushes the solution up

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14. Question 14· Cellular activities· JAMB

    A plant cell placed in a hypotonic solution becomes

    • Aturgid
    • Bplasmolysed
    • Cflaccid
    • Dburst

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15. Question 15· Cellular activities· JAMB

    A plant cell placed in a concentrated salt solution will:

    • Aburst
    • Bbecome plasmolysed
    • Cbecome turgid
    • Ddivide

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16. Question 16· Cellular activities· JAMB

    Phagocytosis is the process by which a cell

    • Adivides into two
    • Bloses water
    • Cengulfs solid particles
    • Dabsorbs light

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17. Question 17· Cellular activities· JAMB

    The movement of water molecules across a semi-permeable membrane from a dilute to a concentrated solution is:

    • Adiffusion
    • Bplasmolysis
    • Cactive transport
    • Dosmosis

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18. Question 18· Cellular activities· JAMB

    The rate of diffusion of a substance increases when the

    • Adistance increases
    • Btemperature falls
    • Csurface area decreases
    • Dconcentration gradient is steeper

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19. Question 19· Cellular activities· JAMB

    Most human enzymes work best at about

    • A0 °C
    • B37 °C
    • C60 °C
    • D100 °C

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20. Question 20· Cellular activities· JAMB

    Most enzymes are denatured by

    • Adarkness
    • Blow temperatures
    • Chigh temperatures
    • Dwater

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