A-LevelBiologyGas exchangeFeb/Mar 2017Paper 2 Q58 Marks
(a) Smooth muscle and cartilage are two of the tissues found in the walls of structures of the gas exchange system of mammals. Complete Fig. 5.1 to show the distribution of these tissues in the gas exchange system of mammals. Choose from the four structures listed below. alveolus trachea bronchus bronchiole irregular plates and incomplete rings cartilage present incomplete rings only present cartilage absent absent [Figure 5.1]
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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