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Chapter 5 Practice Paper: Transport in Humans — question paper

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QQ/S3BI/CH5

Secondary 3 · Biology (G2 / G3)

Chapter 5 Practice Paper

Transport in Humans

Duration: 40 minutes
Total: 30 marks
Name:
Class:
Register No.:
Date:

READ THESE INSTRUCTIONS FIRST

  • Write your name, class and register number in the spaces at the top of this page.
  • Answer all questions.
  • Give numerical answers correct to 3 significant figures unless stated otherwise.
  • The number of marks is given in brackets [ ] at the end of each question or part question.
  • The total number of marks for this paper is 30.

Original practice material written for the MOE Biology syllabus. It is not an official MOE or school examination paper. Main blood vessels to and from the heart, lungs, liver and kidney; artery, vein and capillary structure and function; tissue fluid; blood components and clotting; ABO transfusions; heart structure, valves and the cardiac cycle; coronary heart disease.

For Examiner’s Use
Section A/ 10
Section B/ 20
Total/ 30

Section A: Multiple-choice questions[10 marks]

Choose the one correct answer for each question.

  1. 1

    Which vessel carries deoxygenated blood away from the heart?

    1. Athe aorta
    2. Bthe pulmonary artery
    3. Cthe pulmonary vein
    4. Dthe vena cava
    ( )
  2. 2

    A capillary wall is one cell thick. The advantage is

    1. Ablood flows faster through it
    2. Bit can stretch to hold more blood
    3. Ca very short diffusion distance for exchanging materials
    4. Dit withstands the highest blood pressure
    ( )
  3. 3

    A ventricle pumps 60 cm³ of blood per beat at 70 beats per minute. The cardiac output is

    1. A0.86 L/min
    2. B130 cm³/min
    3. C42 L/min
    4. D4.2 L/min
    ( )
  4. 4

    A person with blood group AB can receive a transfusion of

    1. Aany ABO group
    2. Bgroup O only
    3. Cgroup A only
    4. Dgroup AB only
    ( )
  5. 5

    Which lifestyle change best reduces the risk of coronary heart disease?

    1. Aeating more saturated fat
    2. Bregular exercise and a balanced diet
    3. Csmoking to relax
    4. Davoiding all physical activity
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

  1. 1

    Complete the table naming one main vessel for each organ journey.

    Blood vessel journeys (rows a–c)

    JourneyVessel
    (a) Heart → whole body................
    (b) Heart → lungs................
    (c) Liver → heart................
    1. (a)

      Name the vessel carrying blood from the heart to the whole body, and state which chamber pushes it.

      [2]
    2. (b)

      Name the vessel carrying blood from the heart to the lungs, and state whether its blood is oxygenated.

      [2]
    3. (c)

      Name the vessel carrying blood from the liver back towards the heart.

      [2]
  2. 2

    The heartbeat cycle alternates contraction and relaxation of the atria and ventricles.

    1. (a)

      State what happens during systole and during diastole.

      [2]
    2. (b)

      A heart beats 75 times a minute. Calculate the length of one complete cardiac cycle.

      cycle =s[2]
    3. (c)

      Explain the function of the heart valves.

      [2]
    4. (d)

      State why the left ventricle has a thicker muscular wall than the right ventricle.

      [1]
  3. 3

    Blood is sampled and its components separated.

    1. (a)

      Name the component that transports oxygen, and state the molecule that binds it.

      [2]
    2. (b)

      Name two substances carried dissolved in plasma.

      [2]
    3. (c)

      Describe how platelets stop bleeding from a cut.

      [3]

— End of paper —