A-LevelBiologyTransport in mammals9700/12 · Feb/Mar 2021 · Q311 Mark

The table shows the results used to draw an oxygen dissociation curve for adult haemoglobin. partial pressure of oxygen /kPa: 1, 2, 3, 4, 5, 6, 7 volume of oxygen per gram of haemoglobin/cm³g⁻¹: 0.11, 0.32, 0.58, 0.77, 0.96, 1.07, 1.15 What is the percentage increase in the volume of oxygen per gram of haemoglobin when the partial pressure of oxygen increases from 3 kPa to 5 kPa?

A32.8%

B39.6%

C60.4%

D65.5%

✓ Correct answer

D: 65.5%

Oracle Prep sorts past-paper questions by topic, so you can drill Transport in mammals and see which topics are most likely to come up next.

Topic: Transport in mammals, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2021 Paper 1 Variant 2, question 31.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content