Zadanie 1a
Compare and contrast LAI in the arctic and temperate regions.
- Materiał graficzny
Biology HL Paper 2, May 2023, 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 21 zadań z tego arkusza, razem 87 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (5), Evaluating biological evidence and methods (3), Dominant and recessive phenotype patterns (3).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
Suggest reasons for the different seasonal patterns in boreal and low-latitude forest LAI.
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Zadanie 1c
Analyse the anomaly graph for evidence of an association between warm-Pacific events and LAI.
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Zadanie 1d
(i) State the long-term LAI trend. (ii) Explain how increased atmospheric CO₂ could contribute to this trend.
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Zadanie 1e
State the effect of enrichment on maximum annual NPP at the three sites.
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Zadanie 1f
Outline one benefit of repeating the enrichment experiment at several locations.
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Zadanie 1g
Evaluate the evidence in the bar chart that CO₂ enrichment increases carbon storage in young forests.
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Zadanie 2a
Draw one phospholipid in a suitable position within the blank part of the membrane.
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Zadanie 2b
Deduce the type of secondary structure at X.
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Zadanie 2c
Discuss briefly the polarity expected for amino acids exposed on different parts of the receptor surface.
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Zadanie 2d
Human sleep timing is coordinated with the day–night cycle. Outline how melatonin contributes to this coordination.
Zadanie 3a
Explain how natural selection could increase the frequency of resistance in the bacterial population.
Zadanie 3b
(i) Outline one reason the antibiotic does not eliminate the animal-infecting viruses. (ii) Explain why it does not directly damage the small invertebrates in the same way.
Zadanie 4a
(i) State the number of water molecules shown. (ii) Identify the dotted intermolecular interactions.
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Zadanie 4b
(i) With reference to the model, explain evaporation of water from sweat. (ii) Outline why humans secrete sweat when body temperature rises.
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Zadanie 5a
Explain the inheritance conclusion supported by cross 1.
Zadanie 5b
Deduce why crosses 2 and 3 give different offspring ratios.
Zadanie 5c
Cross 4 produces 96 offspring. Predict the two phenotype counts and the proportion spotted.
Zadanie 6
(a) Outline the role of ADH in maintaining water balance. (b) Explain how an end product can regulate the pathway that makes it. (c) Describe hormonal feedback involved in preparation for pregnancy, maintenance of pregnancy and childbirth.
Zadanie 7
(a) Outline the chromosome changes during prophase I of meiosis. (b) Describe processes performed by enzymes that bind to DNA. (c) Explain how environmental conditions can affect DNA and its expression in living organisms.
Zadanie 8
(a) Explain how vesicles move materials within cells and across their surfaces. (b) Describe how dissolved carbon compounds are transported through phloem. (c) Outline how material moves from the stomach to the large intestine.