Zadanie 1a
Outline the conditions required for osmosis.
Biology SL Paper 3, November 2024, 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 19 zadań z tego arkusza, razem 36 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (5), Evaluating biological evidence and methods (4), Measuring osmotic changes in plant tissue (2).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 1b
Explain how these data can be used to estimate the tissue solute concentration.
Zadanie 1c
Estimate the tissue solute concentration.
Zadanie 2a
The structural diagram shows part of a polysaccharide chain. (i) Identify the polysaccharide. (ii) Identify its monomer.
- Materiał graficzny
Zadanie 2b
A sealed dialysis bag containing starch and glucose is immersed in water. Later the surrounding water tests positive for glucose and negative for starch. Explain how the model represents intestinal absorption.
- Materiał graficzny
Zadanie 3a
State the tested concentration most effective at limiting browning.
Zadanie 3b
State one condition to keep constant across samples.
Zadanie 3c
Outline how each treatment could prevent browning: (i) applying lemon juice; (ii) covering the surface tightly with plastic film.
Zadanie 5
A hypothetical study cuts axons at different distances from their cell bodies and observes twenty individual cultures. Identify the relationship between cut distance and response.
- Materiał graficzny
Zadanie 6
Sensory information from the mouth helps coordinate responses while eating hot food. Outline one type of receptor that provides information in this situation.
Zadanie 12a
State what species richness means.
- Materiał graficzny
Zadanie 12b
Identify two abiotic factors that can limit tundra plant growth.
- Materiał graficzny
Zadanie 12c
(i) Analyse the effect of grazers on species richness. (ii) Suggest reasons for an increase in richness.
- Materiał graficzny
Zadanie 12d
Suggest one implication for planning in situ conservation of tundra plants.
- Materiał graficzny
Zadanie 13
In a hypothetical woodland, a seed-eating rodent stores tree seeds underground. Some stored seeds are never recovered. (i) Describe how both the rodent and tree can benefit. (ii) Identify the rodent’s trophic level when eating these seeds.
Zadanie 15
Methylmercury can occur at harmful concentrations in fish eaten by humans. Explain how such concentrations can develop in the food supply.
Zadanie 16a
High blood cholesterol can contribute to cardiovascular disease. Outline how it can contribute to coronary heart disease.
Zadanie 16b
Blood cholesterol concentration varies among individuals. Identify two possible contributors to high blood cholesterol.
Zadanie 19
A food label describes a nutrient as essential. Outline what essential means in this context.