Zadanie 1a
Calculate the decrease in the control group between weeks20 and80.
- Materiał graficzny
Biology SL Paper 2, May 2025, TZ3
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 20 zadań z tego arkusza, razem 66 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (3), Summarizing continuous data with box plots (3), Assembling glycerol-based lipids (2).
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Dodaj cały arkusz do zestawuZadanie 1b
Compare and contrast the two groups over time.
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Zadanie 1c
In another trial, both groups receive an established effective treatment and only one group receives an additional experimental treatment. Suggest a reason for giving the established treatment to the control group.
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Zadanie 1d
Estimate the median concentration in the mild group.
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Zadanie 1e
State what the triangle represents.
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Zadanie 1f
Evaluate using protein P as a marker to help confirm this disorder.
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Zadanie 2a
Identify the reaction type that forms the ester linkage marked X.
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Zadanie 2b
Identify the starting molecule that contributes region Y.
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Zadanie 2c
State the type of fatty acid represented by the lower chain Z.
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Zadanie 2d
Explain why triglycerides are suitable energy stores.
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Zadanie 3a
A conservation team consults the EDGE of Existence approach. Describe what this approach contributes to conservation.
Zadanie 3b
Describe how the two species could have arisen from the ancestral population.
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Zadanie 4a
A family carries alternative alleles at a disease-associated locus. Define genotype.
Zadanie 4b
A model pedigree concerns a fully penetrant dominant allele D causing a hereditary condition; d does not cause it. Assume no new mutation and no phenocopies. (i) Calculate the probability that individuals1 and2 have an affected child. (ii) Explain why the…
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Zadanie 5a
A farmer considers an insecticide that kills a wide range of insect species. Suggest one disadvantage compared with a narrowly targeted insecticide.
Zadanie 5b
A model aquatic chain has the following tissue concentrations of a persistent insecticide. Microalgae → herbivorous zooplankton → small fish → fish-eating birds 0.03 ppm →0.36 ppm →2.4 ppm →19.2 ppm (i) Identify the trophic role of the small fish. (ii) Explain…
Zadanie 6a
The schematic shows a neuron. Identify X and state its function.
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Zadanie 6b
A chemical synapse produces an excitatory postsynaptic response. Describe how this response is generated.
Zadanie 7
Biological function depends on coordinated structures and recurring processes. (a) Outline how chromosome behaviour in mitosis produces genetically equivalent cells. (b) Describe the production of mRNA in the nucleus. (c) Explain how arterial and venous…
Zadanie 8
Biological function depends on coordinated structures and recurring processes. (a) Outline the roles and regulation of progesterone during the menstrual cycle. (b) Describe the polymerase chain reaction. (c) Explain how carbon is recycled through a terrestrial…