7.4 Explain the purpose of the air bubble. (1)

6.6 Suggest what is meant by the term intraventricular. (1)

1.2 What is the site of gas exchange in humans? (1) A) Nose   B) Alveoli   C) Bronchus   D) Trachea  

TOTAL QUESTION 5: [10] TOTAL SECTION A: [35]

9.2 Which letter shows the tube that contains urine? (1)

12.2 Explain why breathing rate is higher after exercise. (3)

6.7 Suggest two advantages of using the new artificial heart pump compared to previous artificial heart pumps. (2)

  TENEO INTERNATIONAL SCHOOL     SUBJECT:  iBIOLOGY     DATE: 16 JULY 2021     TIME: 100 MINUTES + 10 MINUTES SUBMISSION TIME + 10 MINUTES TECHNICAL TIME     MARKS: 90 MARKS     EXAMINER: R. ISMAIL     MODERATOR: K. GREEN         INSTRUCTIONS   1. The answers you provide to the question paper, must be your own, original work. No copying from any source is allowed. No marks will be awarded for work that is copied   2. Read all the questions carefully.   3. Use the mark allocation as a guide to how much information is required in your answers.   4. You may use a calculator, if necessary, but always show all working out.   5. This paper consists of two sections:  Section A: [35 marks] Section B: [55 marks]   6. Answer all the questions – do not leave any blank.  

9.1 Identify parts labelled A, B and C. (3)   A –     B –     C –  

6.3 Describe how the blood in the left side of the heart differs from the blood in the right side of the heart. (2)