Zadanie 1a
Identify the year with the largest mean tussock-grass biomass where mice were present.
- Materiał graficzny
Biology HL Paper 2, May 2024, TZ1
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 24 zadania z tego arkusza, razem 81 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (5), Evaluating biological evidence and methods (4), Biological calculations, statistics and graphs (2).
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Dodaj cały arkusz do zestawuZadanie 1b
Compare and contrast the mean biomasses of the two grass types in 2006, considering both mouse treatments.
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Zadanie 1c
Deduce which grass type supplies the mice’s food, supporting your answer with the biomass data.
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Zadanie 1d
Calculate the difference between the two mean volume changes in the later experiment.
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Zadanie 1e
Outline the apparent conflict between the volume experiment and the earlier biomass results.
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Zadanie 1f
Suggest an advantage of measuring the volume occupied by plants instead of harvesting their biomass.
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Zadanie 1g
Calculate the percentage of surveyed plots receiving exactly two bird visits.
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Zadanie 1h
State the association between tussock-grass cover and bird visits.
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Zadanie 1i
Suggest a reason for a change in tussock-grass volume in the month-long experiment.
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Zadanie 1j
Describe the cover condition most favourable to mouse survival, giving a reason.
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Zadanie 1k
Discuss the claim that these mice can change their habitat in ways that improve their survival, using the datasets.
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Zadanie 2a
A membrane model is shown. Place H on a hydrophilic part of a phospholipid.
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Zadanie 2b
The model labels one embedded molecule M. Explain how molecules of this type function in sodium–potassium pumps.
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Zadanie 3a
Consider a flowering plant such as a tulip. State the flower structure in which pollen is produced.
Zadanie 3b
Distinguish pollination from fertilization in flowering plants.
Zadanie 3c
A germinating seed contains a cotyledon. Outline the cotyledon’s role during germination.
Zadanie 4a
Outline how tandem repeats are used in DNA profiling.
Zadanie 4b
Identify the adopted child and give a reason.
Zadanie 4c
Explain the function of a DNA promoter.
Zadanie 5a
State one way in which a skeletal muscle fibre differs from a typical small animal cell.
Zadanie 5b
Explain how specialized heart-muscle cells initiate the heartbeat.
Zadanie 6
(a) Outline how evaporation of sweat cools the body. (b) Describe the kidney’s response when body water is depleted. (c) Explain the movement of water from soil, through a flowering plant and into the air.
Zadanie 7
(a) Outline what makes DNA replication semi-conservative. (b) Describe how sexual reproduction generates genetic variation. (c) Explain how isolated populations can become separate species.
Zadanie 8
(a) Describe the assembly of cellulose from monosaccharides. (b) Outline how rising greenhouse-gas concentrations threaten coral reefs. (c) Explain the incorporation of carbon dioxide into organic compounds in the light-independent reactions.