Zadanie 1a
Identify the number of genera represented among the four named species.
Biology HL Paper 1B, 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 16 zadań z tego arkusza, razem 35 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (4).
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Dodaj cały arkusz do zestawuZadanie 1b
Deduce whether these data establish that Pan paniscus is more closely related to Gorilla gorilla than either is to humans.
Zadanie 1c
Humans have 46 chromosomes, while chimpanzees have 48. The simplified maps compare human chromosome 2 with chimpanzee chromosomes 2A and 2B. In the human chromosome, only one centromere-associated region functions as a centromere. Using the diagrams, justify…
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Zadanie 1d
Some human infections are caused by viruses whose ancestors infected other mammals. (i) State one structural feature of a virus. (ii) State the term for an infectious disease that can pass from another animal species to humans.
Zadanie 2a
State the direction of net water movement across the membranes during the first three minutes.
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Zadanie 2b
(i) Explain why the treated cells and control cells show different changes in volume. (ii) Discuss how aquaporins in human collecting ducts help when blood water content becomes too low.
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Zadanie 2c
Outline why relative volumes are more useful here than unadjusted cell volumes.
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Zadanie 2d
Comment on how well the reliability of the results can be assessed.
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Zadanie 2e
Explain why introducing the mRNA does not immediately alter water movement.
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Zadanie 3a
(i) Identify both independent variables. (ii) Outline how assay temperature could be held constant. (iii) Explain why the concentration of ATP synthase must be the same in all assays.
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Zadanie 3b
(i) State the type of scale on the horizontal axis. (ii) Explain why it is useful for these data.
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Zadanie 3c
Describe how the graph indicates consistency of the repeated measurements.
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Zadanie 3d
State the precise mitochondrial location of ATP synthase.
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Zadanie 4a
(i) State what the pairs of numbers in parentheses communicate. (ii) Calculate the percentage decrease in mean male hip extension from the youngest to the oldest group.
Zadanie 4b
Describe a method for measuring the range of motion at a joint.
Zadanie 4c
Distinguish the skeleton of an arthropod from that of a vertebrate.