Zadanie 1a
Calculate the magnification of this cell drawing using its scale bar and the aligned millimetre ruler.
- 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 16 zadań z tego arkusza, razem 33 punkty, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Biological calculations, statistics and graphs (4), Testing limiting factors in photosynthesis (3), Planning a biological investigation (2).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuCalculate the magnification of this cell drawing using its scale bar and the aligned millimetre ruler.
Explain how features of the organelle represented by Y support the theory of endosymbiosis.
Describe advantages that internal membrane compartments provide to a eukaryotic cell.
Calculate the mean rate of oxygen bubble production at 12 cm.
State the relationship between light intensity and photosynthetic rate supported by these results.
(i) Suggest why a water-filled beaker is placed between the lamp and the plant tube. (ii) Identify two variables that should be kept constant.
Outline how the leaves produce the oxygen measured in this investigation.
Draw a straight line of best fit on the graph.
The Pearson correlation coefficient for these data is r = 0.884. Comment on the significance of this value.
Describe how a student could determine a volunteer’s heart rate.
Compare and contrast the route of blood circulation in a bony fish and a mammal.
Identify the mean number of spots per fish under strong predation at month 21.
State the dependent variable in this investigation.
Explain the change in spot number in ponds containing no predators.
Justify the conclusion that predator treatment affected the guppy population’s spotting pattern.
Outline conditions required for a natural guppy population to remain in Hardy–Weinberg equilibrium.
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