Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 20 zadań z tego arkusza, razem 80 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Recording and interpreting biological data (5), Predicting outcomes of dihybrid crosses (2), Cellulose fibres and plant support (2).
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Dodaj cały arkusz do zestawuInformacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
Informacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
Informacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
Informacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
Informacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
Informacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
Informacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
Informacja do zadań 1 a-1 h. All values are constructed for a model investigation of mammalian metabolism. At steady state, a circulating metabolite enters the blood at the same rate as it is removed, so its concentration can remain stable despite continuous…
The diagram represents a transfer RNA carrying phenylalanine. The marked triplet is read 3′-AAA-5′. Deduce the role of the marked triplet.
Three binding sites are used by tRNA molecules during translation. Outline the role of these sites.
Informacja do zadań 3 a-3 b. A fallen willow trunk remains alive. Four branches in contact with damp ground form roots and grow as separate trees, without fertilization. Zadanie 3 a. State the molecule that carries hereditary information in these trees.
Informacja do zadań 3 a-3 b. A fallen willow trunk remains alive. Four branches in contact with damp ground form roots and grow as separate trees, without fertilization. Zadanie 3 b. Predict, with a reason, how similar the four trees’ genome sequences will be.
Informacja do zadań 4 a-4 b. Two pure-breeding lines of a model flowering plant both have cream petals. Line 1 has genotypeAAbb and line 2 aaBB. Their F 1 offspring all have violet petals. Self-fertilization of the F 1 gives an F 2 ratio of 9 violet:7 cream.…
Informacja do zadań 4 a-4 b. Two pure-breeding lines of a model flowering plant both have cream petals. Line 1 has genotypeAAbb and line 2 aaBB. Their F 1 offspring all have violet petals. Self-fertilization of the F 1 gives an F 2 ratio of 9 violet:7 cream.…
Cellulose is a major component of plant cell walls. Describe the molecular structure of cellulose.
A model epidermal-cell sample is placed in pure water. Its mean internal hydrostatic pressure reaches 280 kPa while external atmospheric pressure is 100 kPa. Zadanie 5 b. (i) Outline how the higher pressure develops inside the cells. (ii) State why cellulose…
Growth of a plant cell requires expansion of its wall. Explain how auxin promotes this expansion.
(a) Outline the route and processes by which carbon dioxide in blood arriving at the lungs reaches the outside air. (b) Explain why final urine can contain more concentrated urea than blood plasma. (c) Compare excretion in humans with excretion in a freshwater…
(a) Describe how populations in an ecological community depend on one another for energy supplies. (b) Explain the endosymbiotic origin of organelles in plant cells. (c) Analyse how a flowering plant and its animal pollinator benefit from their interaction.
(a) Outline how new heritable traits can arise and become more common in a population over time. (b) Explain how polyploidy can cause the abrupt origin of a new plant species. (c) Suggest advantages of scientific species names.
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