Biology 0610: EXCRETION IN HUMANS Topical Past Paper Questions

(a) Metabolism produces waste substances that are excreted. Complete Table 2.1 about the excretion of substances. Table 2.1 (b) Figure 2.1 shows the movement of nitrogen-containing substances through the human body. key Figure 2.1 (i) Identify the processes occurring at F, G, H a…

Chickens are birds that are bred by farmers to produce eggs and meat. Modern farmed chickens are very different from the red junglefowl that is their wild ancestor. Table 2.1 describes some of the characteristics of red junglefowl and farmed chickens. Table 2.1 (a) (i) Using Tabl…

Some excretory products are listed. 1 carbon dioxide 2 excess ions 3 excess water 4 urea Which products are excreted by the kidneys? A 1,2 and 3 B 2,3 and 4 C 1 and 2 only D 3 and 4 only