Lesson T1.2.1

T1.2.1 The human skeleton and its functions Quiz: KS3 Biology, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson T1.2.1, The human skeleton and its functions: 20 multiple choice questions for the KS3 Biology (National Curriculum), Unit 1: Structure and function of living organisms, written with Revision Ninja.

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The 20 questions

  1. Which part of the skeleton protects the heart and lungs?

    • The fingers
    • The ribcage
    • The pelvis
    • The skull

  2. What is the primary protective function of the skull?

    • Protecting the lungs
    • Protecting the spine
    • Protecting the heart
    • Protecting the brain

  3. Where are blood cells produced within an adult skeleton?

    • Bone marrow
    • Joint cartilage
    • Ligament fibres
    • Tendon tissue

  4. Which part of the skeleton helps keep the body upright?

    • The fingers
    • The spine
    • The skull
    • The ribcage

  5. Which structure joins skeletal muscles to bones?

    • Joint
    • Cartilage
    • Tendon
    • Ligament

  6. Which bones protect the lungs?

    • The skull
    • The pelvis
    • The femur
    • The ribs

  7. Breaking a leg bone most directly affects which skeletal function?

    • Gas exchange
    • Digestion of food
    • Brain protection
    • Support and movement

  8. What is the primary function of the skeleton's rigid structure?

    • Pump blood
    • Support body weight
    • Absorb light
    • Digest food

  9. Which part of the skeleton protects organs in the lower abdomen?

    • Ribcage
    • Spine
    • Pelvis
    • Skull

  10. What do muscles pull on to produce movement in the body?

    • Bones
    • Skin
    • Tendons
    • Nerves

  11. How many bones does a typical adult human skeleton contain?

    • About 206
    • About 500
    • About 50
    • About 1000

  12. What is the main function of joints in the human skeleton?

    • Store fat
    • Allow movement
    • Digest food
    • Make blood cells

  13. Which tissue inside bones produces red and white blood cells?

    • Bone marrow
    • Ligament
    • Periosteum
    • Cartilage

  14. Which bones form a protective column around the spinal cord?

    • Cranium
    • Clavicle
    • Sternum
    • Vertebrae

  15. Why do bones require a constant supply of blood?

    • Living tissue
    • Digest food
    • Make bile
    • Keep cool

  16. What reduces friction at the ends of bones in a joint?

    • Muscle
    • Ligament
    • Marrow
    • Cartilage

  17. Why must human bones be strong and hard?

    • Conduct heat
    • Float easily
    • Absorb water
    • Support weight

  18. Which process occurs inside the bone marrow?

    • Blood cell production
    • Nutrient absorption
    • Gas exchange
    • Bile production

  19. Which type of joint allows movement in multiple directions like the shoulder?

    • Ball-and-socket
    • Hinge joint
    • Pivot joint
    • Fixed joint

  20. What connects skeletal muscles to bones?

    • Cartilage
    • Tendons
    • Ligaments
    • Nerves

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