Author: Anonymous

7.1.3 Describe how the structure of a fish heart differs from that of a human heart (3)

2.2 Explain what happens to the heart rate and breathing rate after exercise and why? (4)

8.3.2 Eating too much lipid is harmful to health. Explain which shape of chip, A, B or C, is the most healthy to eat. (3)

9.6 Which graph shows the effect of pH on enzyme activity? (1)   Right-click on the blue button to open Fig 9.6      

9.4 The apparatus shown was set up.     Right-click on the blue button to open Fig 9.4         Some hours later, the water in the beaker had turned blue, and the liquid in the glass tube had moved upwards. Which processes caused these changes? (1)   WATER TURNED BLUE LIQUID IN GLASS TUBE MOVED UPWARDS A osmosis diffusion B active transport osmosis C diffusion active transport D diffusion osmosis  

3.2 The diagram shows a kidney nephron with parts labelled A, B and C     Right-Click on the following button to open Figure 3           The following lists events that take place in the nephron. Give the letter of the part where each event takes place?   3.2.1 Ultrafiltration [a] Glucose reabsorption [b] (2)  

6.1.3 Write the word equation for anaerobic respiration in yeast. (2)

9.3 The diagram shows a test-tube containing clear jelly. A drop of blue ink is injected into the middle of the jelly.     Right-click on the blue button below to open Fig 9.3             The blue colour of the ink spreads throughout the jelly By which process does the blue ink spread through the jelly? (1)

6. Yeast can be used to make beer. This process takes place in anaerobic conditions    

7.2 The formula below shows Fick’s law. Rate of diffusion = (area of diffusion x difference in concentration) ÷ ( thickness of surface area over which diffusion takes place) Use the information in the formula to explain how the rate of diffusion is affected by asthma. (2)