A-LevelBiologyTransport in mammalsOct/Nov 2010Paper 1 Q301 Mark
The graph shows pressure changes during a cardiac cycle. [Figure 30.1 showing a graph of pressure vs time with points W, X, Y, Z] Which row correctly identifies W, X, Y, and Z? W X Y Z
Aatrio-ventricular valves close semi-lunar valves close semi-lunar valves open atrio-ventricular valves open
Batrio-ventricular valves close atrio-ventricular valves open semi-lunar valves open semi-lunar valves close
Csemi-lunar valves close atrio-ventricular valves open atrio-ventricular valves close semi-lunar valves open
Dsemi-lunar valves open atrio-ventricular valves close atrio-ventricular valves open semi-lunar valves close
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of transport in mammals within the Biologysyllabus. The examiner's mark scheme requires...
📋 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...
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