Zadanie 1a
Identify the percentage saturation at an oxygen partial pressure of 40 mmHg.
- Materiał graficzny
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 17 zadań z tego arkusza, razem 35 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (4), Interpreting haemoglobin dissociation curves (2), Oxygen binding in fetal and adult haemoglobin (2).
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Dodaj cały arkusz do zestawuIdentify the percentage saturation at an oxygen partial pressure of 40 mmHg.
Describe the relationship shown between oxygen partial pressure and haemoglobin saturation.
Sketch, on the same axes, the curve expected for fetal haemoglobin under the same conditions.
Describe one feature of haemoglobin that enables it to transport oxygen.
Describe how a student could measure tidal volume.
Justify why the otter has a higher DDT concentration than either the heron or the pike.
Identify which fish would give the lowest DDT intake per equal mass of lipid consumed, and give a reason.
Outline a method for estimating the number of roach in this wetland.
Discuss how overfishing could affect this wetland and how the sustainability of fishing could be assessed.
Calculate the difference between the percentages of the two isotopes outside cells after 2 minutes of blending.
Explain how the results support DNA as the hereditary material of these phages.
(i) Draw a labelled diagram showing the components and arrangement of one DNA nucleotide. (ii) Classify the four DNA bases as purines or pyrimidines.
Predict the percentage decolourization at a laccase concentration of 6.0 mg mL−1.
Deduce what the overlapping error bars at 3.6 and 4.8 mg mL−1 suggest about the difference between these means.
Discuss two variables that should be controlled in this investigation.
Suggest how the percentage decolourization could be measured.
Distinguish a cyclic metabolic pathway from a linear metabolic pathway.
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