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Organisation of the Organism

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Cell structure and organisation

Subtopic

Cell structure and organisation under Organisation of the Organism for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which organelle translates genetic code into polypeptide chains?

    A.

    Ribosome

    B.

    Golgi body

    C.

    Nucleus

    D.

    Vacuole

  2. 2.

    What is the function of the acrosome in the head of a sperm cell?

    A.

    To produce energy for swimming

    B.

    To store the genetic material

    C.

    To digest the outer layers of the egg cell

    D.

    To push the cell forward

  3. 3.

    Which of these is a prokaryote?

    A.

    Bacterium

    B.

    Amoeba

    C.

    Yeast

    D.

    Onion cell

Download the worksheet for Organisation of the Organism - Cell structure and organisation to practice offline. It includes additional chapter-level practice questions.

Levels of organisation

Subtopic

Levels of organisation under Organisation of the Organism for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which level of organization consists of sieve tubes and companion cells in plants?

    A.

    Organ

    B.

    Tissue

    C.

    Cell

    D.

    Organism

  2. 2.

    A dandelion plant is an example of which level of organization?

    A.

    Tissue

    B.

    Organ

    C.

    Organ system

    D.

    Organism

  3. 3.

    The trachea is part of the respiratory system. What level of organization is the trachea?

    A.

    Organ

    B.

    Tissue

    C.

    Cell

    D.

    Organism

Download the worksheet for Organisation of the Organism - Levels of organisation to practice offline. It includes additional chapter-level practice questions.

Size of specimens (Magnification)

Subtopic

Size of specimens (Magnification) under Organisation of the Organism for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the actual size of a specimen if its image is 100 mm100\ mm long and the magnification is x250x250?

    A.

    0.4 mm0.4\ mm

    B.

    4 mm4\ mm

    C.

    40 mm40\ mm

    D.

    25,000 mm25,000\ mm

  2. 2.

    If a nucleus measures 0.01 mm0.01\ mm and its image measures 5 mm5\ mm, what is the magnification?

    A.

    x5x5

    B.

    x50x50

    C.

    x500x500

    D.

    x5000x5000

  3. 3.

    When converting from micrometers (μm\mu m) to nanometers (nmnm), the value should be multiplied by which factor?

    A.

    1010

    B.

    100100

    C.

    10001000

    D.

    10,00010,000

Download the worksheet for Organisation of the Organism - Size of specimens (Magnification) to practice offline. It includes additional chapter-level practice questions.