Zadanie 1a
Define osmolarity.
Biology SL Paper 3, May 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 30 zadań z tego arkusza, razem 55 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Evaluating biological evidence and methods (13), Recording and interpreting biological data (9), Planning a biological investigation (3).
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Dodaj cały arkusz do zestawuZadanie 1b
Describe two factors to keep constant for an accurate estimate.
Zadanie 2a
State what the error bars represent.
- Materiał graficzny
Zadanie 2b
Distinguish between the responses of the two genera.
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Zadanie 2c
Suggest ecosystem changes that could follow an increase to850ppm.
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Zadanie 3a
Describe how exercise intensity relates to oxygen consumption and to the volume of air inhaled per minute.
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Zadanie 3b
Explain why increased exercise changes total ventilation.
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Zadanie 4a
The conceptual diagrams model changes in a developing neural network. (i) State two major changes visible between early development and later childhood. (ii) Outline the main change visible between later childhood and adolescence.
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Zadanie 4b
Neurons in the brain have a high metabolic demand. Suggest a major source of energy for this tissue.
Zadanie 5a
Mammals use olfactory receptor cells to detect odours. Describe two features these cells need for this role.
Zadanie 5b
An odour provides information about the surrounding environment. Suggest two mammalian behaviours that could change when a particular odour is detected.
Zadanie 5c
A hypothetical comparison includes thirteen placental mammal species. Species I-M are primates. Suggest two reasons for the lower counts in the primate group.
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Zadanie 7a
Microbial cultures can be used to manufacture useful substances. State one advantage of using microorganisms for this purpose.
Zadanie 7b
A continuous fungal culture produces an organic acid in a fermenter. Outline one condition needed for effective production.
Zadanie 8
A hypothetical crop tolerates herbicide J. The model survey records weed species resistant to J. Suggest environmental problems that could result from the trend.
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Zadanie 9a
Evaluate whether acid K could control formation of the surface community.
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Zadanie 9b
Suggest a reason for the effect of acid K.
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Zadanie 11a
Identify the type of niche represented by each treatment.
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Zadanie 11b
Distinguish the distributions of species A and B across the two treatments.
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Zadanie 11c
Describe two other environmental factors that could affect their distribution, explaining the role of each.
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Zadanie 12a
A hypothetical production model gives the edible biomass obtained from100kg of feed. (i) State one reason why not all ingested energy becomes new animal biomass. (ii) Discuss the difference in feed conversion between cattle and fish. (iii) Deduce an advantage…
- Tabela do uzupełnienia
Zadanie 12b
The climograph represents a hypothetical terrestrial ecosystem. Identify the biome best supported by these data.
- Materiał graficzny
Zadanie 13a
In a hypothetical coastal reserve, a predatory fish arrives from another ocean and establishes a growing population on reefs. Discuss possible effects of this introduction.
Zadanie 13b
Some pesticides persist after application. Outline environmental effects of DDT.
Zadanie 14
A reserve plans repeated quantitative surveys of a plant community. Suggest methods for detecting changes in its biodiversity over time.
Zadanie 15
A hypothetical survey groups adults by body-mass category. The bars show percentages with vitamin D deficiency and model95% confidence intervals. Outline the association shown.
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Zadanie 16a
A hypothetical outbreak of a waterborne intestinal infection produces the hospital-admission pattern shown. Suggest one reason for this age distribution.
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Zadanie 16b
The large intestine is part of the digestive tract. Outline processes occurring there in a healthy person.
Zadanie 18a
A research team compares deaths from coronary heart disease between groups of adults. Suggest one factor that could contribute to a difference between male and female groups.
Zadanie 18b
The team also plans comparisons between population groups with different cultural and social backgrounds. Explain why these comparisons could help the investigation.