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  TOTAL QUESTION 7 [13]

7.1 Describe how the human lung is adapted for rapid gas exchange. (5)

  TOTAL QUESTION 5 [16]

5.5 The DNA of an organism carries its genetic code. The diagram below shows part of the DNA of a gene.   C C A T T C                 Choose the correct answer indicating the mRNA produced from this DNA. (1)

1.3 The maximum pressure in the right ventricle is lower than the maximum pressure in the left ventricle. Explain the importance of this pressure difference. (2)

2.1.2 Explain the roles of each of these tissues in blood vessels. (3)

4.3 Choose the correct option to complete the following statement. The process by which glucose passes through the cell membrane is called? (1)

  Extra space to write in. Use only when needed  

2.3.3 Name one group of drugs, other than anticoagulants, that can be used to treat CVD. (1)

1.1.3 Using the information in the graph, state the time at which the atrioventricular valve closes. (1)