7.3 Explain why the pressure of the blood returning to the fish heart is lower than the pressure of the blood returning to the human heart. (2)

  SPACE TO UPLOAD EXTRA NOTES. USE THIS SPACE ONLY IF NEEDED  

9.5 Four solutions were tested to see whether they contained protein, starch or glucose. The colours of the solutions after the tests are recorded in the table. Which solution contained protein and glucose but not starch? (1)   biuret test iodine test Benedicts’s test A blue brown orange B blue blue-black blue C purple brown orange D purple blue-black blue    

  TOTAL QUESTION 6  [8]

QUESTION 7  

4. A person touches a sharp pin.     The diagram shows the reflex arc involved in the response to this stimulus.     Right-click on the following button to open Figure 4.1         4.1.1 Name the parts labelled A, B, C and D.     [partA] [partB] [partC] [partD] (4)

  TOTAL QUESTION 9  [16]

3.2.3 Describe how the kidney machine removes urea from the blood. (2)

8.3 Chips are cooked by frying them in lipid (oil). Some of this lipid is left on the surface of the chips after cooking. The diagram shows three different shaped chips from the same potato. Each chip has the same mass.     Right-click on the button below to open Fig 8.3        

6.1.2 What is meant by the term anaerobic (1)