B3.3 Muscle and motility

B3.3 Muscle and motility Quiz

IB Biology HL: Quiz

Studying this course? Keep your progress in one place.

Pick an answer for each. Quizzes never use energy.

5 questions, one answer each

Each answer is checked as you go, with why.

See all 5 questions

  1. 1. During contraction, the H-zone:

    • A. Lengthens
    • B. Shortens
    • C. Stays the same
    • D. Becomes the A-band

  2. 2. Titin mainly:

    • A. Hydrolyses ATP
    • B. Blocks myosin binding sites
    • C. Recoils stretched sarcomeres and prevents overstretching
    • D. Releases calcium ions

  3. 3. A motor unit contains:

    • A. One muscle fibre and many neurons
    • B. One motor neuron and the fibres it supplies
    • C. One sarcomere
    • D. A tendon and a ligament

  4. 4. Which structure joins the femur to the pelvis?

    • A. Tendon
    • B. Ligament
    • C. Cartilage
    • D. Synovial fluid

  5. 5. A humpback whale's tail fluke moves:

    • A. Side to side
    • B. Up and down
    • C. In circles
    • D. Not at all

Quiz