Question 5
Question 5 of 40
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A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
6. Plant nutrition
6.3. Mineral nutrition

Explain the importance of nitrate ions for making amino acids, required for the production of proteins

19. Relationships of orga...
19.2. Nutrient cycles

Outline the nitrogen cycle in making nitrogen available for plant and animal protein, limited to: (a) decomposition of plant and animal protein to ammonium ions (b) nitrification (c) nitrogen fixation by lightning and bacteria (d) absorption of nitrate ions by plants (e) production of amino acids and protein (f) feeding and digestion of proteins (g) denitrification (the names of individual bacteria are not required)

6. Plant nutrition
6.2. Leaf structure

State that most leaves have a large surface area and are thin, and explain how these features are adaptations for photosynthesis