7.2 For this investigation identify the: (2)   Independent variable –     Dependent variable –  

10.3 Discuss two structural differences between the artery and vein. (2)

7.8 What could be used to ensure that the apparatus is airtight. (1)

2.3 Anaerobic respiration in plants produce ethanol. (1)

QUESTION 12

TOTAL QUESTION 8: 

TOTAL QUESTION 10: 

9. The diagram shows the human kidney with tubes labelled A, B and C. Study the diagram below and answer the questions.   Right-click on the button below to open the image in a new tab:

12.1 Give headings for the following table. (2)   Student 1 14 27 2 13 25 3 14 26

4.1 The passage describes the role of the blood transport system. Read the passage below and fill in the blanks. (10)     The blood cells are transported in a straw-coloured liquid called . In this liquid there are blood cells that contain the protein that is used to carry oxygen around the body. The oxygen is used by the body cells in respiration. The gas produced by the cells in respiration is transported to the lungs and is exhaled with water vapour when we breathe out. Other components transported in the plasma are that help the blood to clot following a cut or , and white blood cells that are involved in preventing infection. Some of these white blood cells release specific molecules called to destroy bacteria. Other white blood cells called can surround and invading bacteria.