Author: Anonymous

9.9 A celery stalk was placed into a beaker of blue dye. When the dye reached the leaves, the stalk was taken out and a section was cut, as shown in the diagram.     Right-click on the blue button to open Fig 9.9(a)         Which diagram shows the appearance of the cut end of the stalk? (1)   Right-click on the blue button to open Fig 9.9(b) to see your options.      

6.2.1  Describe how the bottles can be sterilised. (1)

8. Many people in South Africa eat fish and chips.   8.1 Describe what happens to fish protein in the stomach. (4)

6.1.2 What is meant by the term anaerobic? (1)

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

3.3.1 Kidney failure can be treated by transplanting a healthy donor kidney into the patient. The procedure involves connecting two blood vessels and a tube to the transplanted kidney. Name the two blood vessels and the tube. (2)   Blood vessel 1 …………     Blood vessel 2 …………..     tube ……………….  

5.1 Write a balanced chemical symbol equation for photosynthesis. (2)      

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)  

4.1 COPD includes diseases such as emphysema (lines 2-6). Give two causes of emphysema. (2)

3.2 When a person is vaccinated, their immune system produces memory cells. Describe the role of memory cells. (3)