Zadanie 1a
State the relationship between BCH and brain mass.
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Biology HL Paper 2, November 2022
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 29 zadań z tego arkusza, razem 85 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Evaluating biological evidence and methods (7), Recording and interpreting biological data (6), Human increases in greenhouse gases (3).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
Outline how P departs from the general relationship.
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Zadanie 1c
Suggest a reason for using BCH rather than brain mass in a repeated study of the same animals.
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Zadanie 1d
State the season in which the data indicate the greatest brain mass.
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Zadanie 1e
Compare and contrast the winter and spring samples.
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Zadanie 1f
Suggest a reason for the seasonal difference in BCH between summer and winter.
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Zadanie 1g
State the activity and season with the highest mean percentage of observation time.
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Zadanie 1h
Suggest reasons for the seasonal difference in time spent eating and drinking.
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Zadanie 1i
Calculate the percentage of containers containing food.
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Zadanie 1j
Outline a reason for standardizing the travelled distance.
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Zadanie 1k
Compare and contrast the results for trials 2 and 9.
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Zadanie 1l
Using all the data, suggest why mean standardized paths differ between summer and winter.
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Zadanie 2a
Identify the meiotic stage when this exchange occurs.
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Zadanie 2b
Explain why a dihybrid cross involving linked loci can differ from the ratio expected with independent assortment.
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Zadanie 3a
Analyse whether the graphs support the claim that changing solar energy explains the long-term rise in surface temperature.
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Zadanie 3b
Explain how higher atmospheric carbon dioxide can contribute to warming.
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Zadanie 3c
State another greenhouse gas.
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Zadanie 4a
Identify the labelled type of protein.
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Zadanie 4b
Outline one way nucleosomes can affect transcription.
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Zadanie 4c
Identify (i) X and (ii) the upstream DNA region Y where X binds to begin transcription.
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Zadanie 4d
Explain the role of K in expression of the gene for enzyme E.
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Zadanie 4e
State one reason why the DNA methylation patterns of monozygotic twins could differ as they grow older.
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Zadanie 5a
Identify (i) X and (ii) Y.
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Zadanie 5b
State the kidney region into which the loop of Henle extends.
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Zadanie 5c
Explain the role of ADH in osmoregulation.
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Zadanie 5d
Outline two leaf adaptations that conserve water in desert plants.
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Zadanie 6
Cell specialization depends on coordinated cellular processes. (a) Outline processes occurring during interphase. (b) Describe how an action potential propagates along an axon. (c) Explain how cells in blood produce a specific immune response.
Zadanie 7
Photosynthesis supplies carbohydrates that can be exported from leaves. (a) Describe ATP production linked to photosystem II in the light-dependent reactions. (b) Explain how carbohydrates move from leaves to other parts of a plant.
Zadanie 8
Evolutionary relationships can be investigated using populations, chromosomes and molecular evidence. (a) Outline how adaptive radiation provides evidence for evolution. (b) Describe polyploidy and its possible role in speciation. (c) Explain how a newly…