Zadanie 1a
State how the overall magnification of the microscope is calculated.
Biology SL Paper 1B, May 2025, 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 14 zadań z tego arkusza, razem 24 punkty, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Polygenes, environment and continuous variation (2).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
(i) Outline how stomatal density can be estimated in a field of view of known area. (ii) Suggest how to make the estimate more reliable.
Zadanie 1c
Mangrove trees grow in saline, waterlogged sediments. Explain one root adaptation that helps a mangrove survive these conditions.
Zadanie 2a
(i) Identify the modal shell-length class. (ii) Identify the class containing the median individual.
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Zadanie 2b
State the type of variation in shell length and give a reason.
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Zadanie 2c
Compare and contrast substitution and insertion mutations.
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Zadanie 2d
Outline why some unicellular eukaryotes are described as mixotrophs.
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Zadanie 3a
(i) Describe the relationship shown. (ii) In a separate similar dataset, a fitted model gives R2 = 0.89. Comment on this result.
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Zadanie 3b
Distinguish the functions of sensory and motor neurons.
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Zadanie 3c
Explain how ATP is suited to supplying energy for processes that support nerve signalling.
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Zadanie 4a
Suggest whether the chromosome counts most likely come from somatic cells or gametes, giving a reason.
Zadanie 4b
State one feature used to arrange chromosomes when preparing a karyogram.
Zadanie 4c
Outline the role of histones in these eukaryotic chromosomes.
Zadanie 4d
Using the table, discuss whether larger genomes necessarily indicate more complex organisms.