Zadanie 1a
(i) Calculate the seasonal water-temperature difference. (ii) Calculate summer CPUE as a percentage of winter CPUE.
- Materiał graficzny
Biology HL Paper 2, November 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 26 zadań z tego arkusza, razem 96 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Metabolic heat production (3), Fat reserves and insulation (2), Sarcomere shortening by filament sliding (2).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
(i) Distinguish the blubber proportions of the two age classes across the seasons. (ii) Suggest reasons for this difference.
- Materiał graficzny
Zadanie 1c
Compare and contrast the age trends in length and summer body mass.
- Materiał graficzny
Zadanie 1d
Explain possible reasons for the seasonal differences in body mass.
- Materiał graficzny
Zadanie 1e
(i) State the relationship between body mass and BMR among the desert species. (ii) Outline a biological reason for it.
- Materiał graficzny
Zadanie 1f
Explain the contrast in BMR between polar and desert species below1000g.
- Materiał graficzny
Zadanie 1g
For mammals heavier than10kg, assume the habitat-related BMR difference becomes small. Suggest why.
- Materiał graficzny
Zadanie 2a
Distinguish dietary essential amino acids from non-essential amino acids.
Zadanie 2b
Draw a labelled structural diagram of a general amino acid, using R for the side chain.
Zadanie 2c
List two types of side-chain interaction that stabilize a folded polypeptide.
Zadanie 3a
Outline the contribution of mitochondria to muscle-fibre function.
Zadanie 3b
Explain how actin and myosin produce sarcomere shortening.
Zadanie 3c
Explain how titin contributes when a stretched muscle relaxes.
Zadanie 4a
State one metabolic process that takes carbon dioxide out of the atmosphere.
- Materiał graficzny
Zadanie 4b
Identify two natural carbon stores other than the ocean that can keep carbon out of rapid atmospheric circulation.
- Materiał graficzny
Zadanie 4c
Explain two human-related causes of the recent rise.
- Materiał graficzny
Zadanie 5a
Describe how scientists could assess whether the fish harvest is sustainable.
Zadanie 5b
Outline how persistent mercury compounds can reach high concentrations in organisms.
Zadanie 5c
Separately from mercury, consider a chemical carcinogen. Explain how such a substance can initiate cancer.
Zadanie 5d
Identify the missing domain and the rank immediately above genus.
Zadanie 6a
State what is meant by a biome.
Zadanie 6b
Explain three plant adaptations that support survival in a hot desert.
Zadanie 6c
State one plant feature that deters herbivory in this environment.
Zadanie 7
A museum exhibit explores biological diversity from genetic sequences to infectious particles. (a) Explain how nucleic acids can encode a wide variety of base sequences. (b) Describe structural diversity among viruses, using named examples. (c) Suggest…
Zadanie 8
A pharmacology seminar considers molecules that alter biological interactions. (a) Explain competitive enzyme inhibition using a named example. (b) Describe chemical synaptic transmission and ways external chemicals can alter it. (c) Discuss possible…
Zadanie 9
A physiology course examines how biological systems preserve stable information and internal conditions. (a) Explain mechanisms that reduce copying errors during DNA replication. (b) Describe regulation of blood glucose in humans. (c) Explain why extracellular…