Science Combined 0653: B11. Organisms and their environment Topical Past Paper Questions

(a) Proteins and carbohydrates are part of a balanced diet. (i) Name one element present in proteins that is not present in carbohydrates. [1] (ii) Lipase is an enzyme that has a role in digestion. Explain why lipase will not digest proteins. ..... [3] (b) Figure 3.1 shows part o…

(a) Fig. 2.1 shows a food web. Fig. 2.1 (i) Circle the word that describes the tree in Fig. 2.1. (iii) Identify the animal in Fig. 2.1 that gets its energy from the spider. (b) Transpiration takes place in plants. (i) Describe transpiration in plants. (ii) Describe the effect of…

(a) A student draws diagrams to show the position of xylem in different parts of a plant. Fig. 4.1 shows the student's drawings. Fig. 4.1 The student made errors in labelling the drawings. Identify two errors made by the student in Fig. 4.1. (b) Fig. 4.2 shows the effect of humid…