Zadanie 1a
Animal epithelial cells often have less regular outlines than cells in plant tissues. Explain this difference.
Biology SL Paper 3, May 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 24 zadania z tego arkusza, razem 45 punktów, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Evaluating biological evidence and methods (11), Recording and interpreting biological data (5), Osmotic effects on cells without walls (2).
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Dodaj cały arkusz do zestawuZadanie 1b
An animal epithelial cell is transferred to a hypertonic salt solution. Describe what would happen to it.
Zadanie 1c
A cheek-cell preparation also contains single cells much smaller than the epithelial cells. Predict what these smaller cells could be, giving a reason.
Zadanie 2
The outline represents a prokaryotic cell. Draw and label its internal structures.
- Materiał graficzny
Zadanie 3a
Outline the effect of extra carbon dioxide on growth of the red alga.
- Materiał graficzny
Zadanie 3b
Suggest why growth in the tanks exceeds growth in the field.
- Materiał graficzny
Zadanie 3c
State one advantage of research using mesocosms.
- Materiał graficzny
Zadanie 3d
Explain how to establish a mesocosm inside a sealed container.
- Materiał graficzny
Zadanie 4a
Some brain disorders affect higher-order functions. State two examples of higher-order functions.
Zadanie 4b
In a hypothetical degenerative condition, abnormal proteins accumulate inside neurons and around their terminals. Predict one effect on neuron function.
- Materiał graficzny
Zadanie 5
Specialized neurons develop early in an embryo. State the process by which cells initially become neurons.
Zadanie 8
A fermenter maintains a microbial culture for continuous production. Identify two conditions that should be monitored to maintain suitable growth conditions.
Zadanie 9a
A hypothetical crop is engineered to resist herbicide H. H kills susceptible weeds and is readily broken down by soil microorganisms. Explain two advantages of growing the resistant crop.
Zadanie 9b
A hypothetical crop is engineered to resist herbicide H. H kills susceptible weeds and is readily broken down by soil microorganisms. A model survey follows adoption of the resistance trait in two crops. (i) Identify the first year in which the percentage for…
- Materiał graficzny
Zadanie 10
The mouth can contain many bacterial cells. Suggest one reason for their abundance.
Zadanie 12a
Outline two factors that could lead to occupation of different habitats.
- Materiał graficzny
Zadanie 12b
Deduce whether the graph demonstrates that growth in human population causes growth in bird S population.
- Materiał graficzny
Zadanie 12c
List three factors that can affect animal-species distribution.
- Materiał graficzny
Zadanie 13
A severe fire occurs on a hillside. Outline how this can increase soil erosion.
Zadanie 14a
A simplified model represents a coastal food web. Identify two primary consumers in the web.
- Materiał graficzny
Zadanie 14b
A simplified model represents a coastal food web. In another coastal system, an introduced predator is followed by a decline in an invasive consumer. Discuss whether such biological control should be used.
- Materiał graficzny
Zadanie 15
Several approaches can be used to conserve threatened species. Discuss in situ and ex situ conservation.
Zadanie 17
An intestinal infection causes severe diarrhoea. Suggest how this condition could become fatal.
Zadanie 19
The tables form a hypothetical nutrition exercise, not dietary recommendations. (i) Calculate the percentage of the model daily sodium maximum consumed by a30-year-old who eats48crackers. (ii) Outline one nutritional concern if a child eats large quantities of…
- Tabela do uzupełnienia