Zadanie 1
Electron microscopy extended the study of cells beyond what was possible with light microscopy. Outline one contribution of this development to knowledge of cell structure.
Biology SL Paper 3, November 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 29 zadań z tego arkusza, razem 52 punkty, każde z kluczem i schematem punktowania. Najwięcej zadań sprawdza: Evaluating biological evidence and methods (11), Recording and interpreting biological data (9), Measuring respiratory volumes (3).
Rozwiąż arkuszCały arkusz po kolei. Wynik na końcu.
Dodaj cały arkusz do zestawuZadanie 2a
Explain the curve in terms of limiting factors.
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Zadanie 2b
State one variable that should be controlled when testing the effect of light intensity.
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Zadanie 2c
In another observation, more rapid photosynthesis is associated with rising water pH. Suggest an explanation.
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Zadanie 3a
State one function of valve X.
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Zadanie 3b
Describe the direction of the pen stroke during inspiration.
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Zadanie 3c
Explain the gradual decrease in the trace baseline during normal resting breathing.
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Zadanie 4a
The arrow marks a region of the brain. State one function performed by region X.
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Zadanie 4b
In a model tissue-culture experiment, TTX prevents postsynaptic responses to presynaptic signals. After12days, axon branching is compared with untreated tissue. Graphs show means by depth; horizontal error bars on branch lengths show SD. (i) Identify the depth…
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Zadanie 5
Three hypothetical photoreceptor pigments have the model absorption spectra shown. Identify the wavelength range over which pigment M absorbs light in this model.
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Zadanie 7
The supplied sequence shows neurulation in a vertebrate embryo. The neural tube later contributes to the brain and spinal cord. Describe the changes shown during neurulation.
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Zadanie 8a
List two reasons why this process could be useful commercially.
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Zadanie 8b
Outline how one harmful change caused by microbial activity could be prevented.
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Zadanie 9a
In a hypothetical region, crops resistant to a herbicide H are introduced during the survey period. The graph shows subsequent use and confirmed resistant-weed records. Suggest one reason for the increasing occurrence of resistant weeds.
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Zadanie 9b
A simulated observational study combines annual records from many hospitals over20years. It relates regional use of a hypothetical agricultural chemical H to reported health outcomes. The figures below are invented for evaluating evidence; they are not…
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Zadanie 11a
Distinguish between the energy efficiencies of beef and poultry production.
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Zadanie 11b
Suggest a reason for this difference.
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Zadanie 11c
Outline two ways livestock production can alter nutrient cycling.
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Zadanie 12
Four islands in an isolated archipelago are shown at a common scale. Predict which island might have the greatest biodiversity, giving a reason.
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Zadanie 13a
Identify the additive with the greater concentration in (i) the body wall and (ii) the gut wall.
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Zadanie 13b
Explain how biomagnification of additive B through this food web could affect human health.
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Zadanie 14a
Calculate the increase in germination success after gut passage compared with partial pulp removal, in percentage points.
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Zadanie 14b
The bird population declines because of road deaths, introduced predators and habitat damage. Deduce two possible effects on tree R.
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Zadanie 14c
Define a keystone species.
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Zadanie 14d
Discuss advantages of protecting this bird through in situ conservation.
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Zadanie 15
A hypothetical survey includes4860adult women. The table reports the percentage in each supplied body-mass category with each chronic condition. These constructed data are for interpreting observational evidence, not clinical estimates. Evaluate the evidence…
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Zadanie 16a
Deduce how each compound would affect stomach pH.
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Zadanie 16b
Explain how hydrochloric acid contributes to protein digestion in the stomach.
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Zadanie 17
Liver cells have extensive networks of endoplasmic reticulum. Suggest a reason for this abundance.