Author: Anonymous

9.14 Muscles are responsible for the ventilation of the lungs during breathing. Which row describes their action during the inspiration of air? (1)   diaphragm muscles external intercostal muscles internal intercostal muscles A contract contract relax B contract relax contract C relax contract relax D relax relax contract  

6.3.1 Name the enzyme that digests the starch in the barley. (1)      

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    

9.16 What helps oxygen to be absorbed rapidly into the blood in the lungs? (1)

  TOTAL QUESTION 6  [8]

6.2.2 Why is it important to use sterile bottles? (1)

  TOTAL QUESTION 8 [13]

4.2 Reflexes in animals and phototropism in plants are both responses to stimuli.   4.2.1 Give two similarities between the mechanisms involved in each response (2)

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)

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