Zadanie 1a
Suggest an appropriate control for the enzyme assay.
- Materiał graficzny
Biology SL Paper 2, November 2024, TZ2
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 18 zadań z tego arkusza, razem 58 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (4), Evaluating biological evidence and methods (3), Drawing quantitative energy pyramids (2).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
Identify the two leaf varieties whose extracts show no inhibition.
- Materiał graficzny
Zadanie 1c
Suggest why the concentration study included only the water extract of leaf E.
- Materiał graficzny
Zadanie 1d
Analyse the effects of increasing extract concentration.
- Materiał graficzny
Zadanie 1e
Calculate the largest overall increase in mean body mass during the dietary trial.
- Materiał graficzny
Zadanie 1f
Distinguish between the body-mass changes with leaf B and leaf A.
- Materiał graficzny
Zadanie 1g
Compare and contrast HbA1c in the dietary groups and control.
- Materiał graficzny
Zadanie 1h
Evaluate the evidence for health benefits from adding dried leaf B to the diet.
- Materiał graficzny
Zadanie 2
A technician mixes a small sample of mammalian blood with pure water. Intact red cells subsequently disappear from view. Suggest why the red cells disappear.
Zadanie 3a
Identify the trophic level of C.
- Materiał graficzny
Zadanie 3b
Sketch an energy pyramid for A, B, C and D.
- Materiał graficzny
Zadanie 3c
State two sources supplying energy to X.
- Materiał graficzny
Zadanie 3d
Explain why only a small amount of energy passes to the next consumer level, excluding the transfers shown to X.
- Materiał graficzny
Zadanie 4a
Distinguish the structure of arteries from that of veins.
Zadanie 4b
At low magnification, a section of tissue shows large arteries and veins but no capillaries can be resolved. Suggest why capillaries are not visible.
Zadanie 5
The drawing represents a motor neuron. Name the structures indicated by X, Y and Z.
- Materiał graficzny
Zadanie 6
A health study considers sickle-cell anaemia in a malaria-endemic region of Uganda. Individuals with two sickle-cell alleles may develop severe anaemia; heterozygotes generally lack that severe phenotype and have some protection against malaria. (a) Outline…
Zadanie 7
Water and dissolved substances connect the functioning of cells with the physical conditions of oceans. (a) Outline properties of water, linking each to its importance for living organisms. (b) Describe how water-soluble molecules and ions pass across cell…