Zadanie 3a
Explain why respiration moves the marker to the left, towards the seed chamber.
- Materiał graficzny
Cell respiration
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Umiejętności z tego działu sprawdza 49 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 30 z 54 arkuszy w bazie.
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Zadanie 3c
In a two-hour run, the marker travels 40 mm through a capillary of internal radius 0.60 mm. Calculate the oxygen uptake rate in mm³ h⁻¹ to two decimal places. Use V = πr2l with π = 3.14.
- Materiał graficzny
Zadanie 3e
Explain ATP synthesis by chemiosmosis in aerobic respiration.
- Materiał graficzny
Zadanie 6
Four 300 g portions of the same yeast dough begin at the same volume and incubate for 50 minutes. The final volumes are shown. Which conclusion is supported? A. Every yeast enzyme must have an optimum of 37 °C B. The lowest temperature caused the greatest…
- Materiał graficzny
Zadanie 6a
State the full chemical name abbreviated as ATP.
Zadanie 6b
Outline one role of ATP in the degradation pathway.
Zadanie 7
A human muscle fibre can obtain energy aerobically or, for a short time, without oxygen. Which outcome occurs in both pathways? A. All carbon atoms from glucose are released as carbon dioxide B. Glucose breakdown supplies energy for ATP synthesis C. The…
Zadanie 9
A cell repeatedly consumes and regenerates ATP while transporting ions. Which description fits the molecule being cycled? A. A long-term lipid reserve broken down only during starvation B. A structural polysaccharide storing information in its branches C. A…
Zadanie 9
Glucose connects molecular structure, energy release and physiological regulation. (a) Distinguish alpha-glucose and beta-glucose in structure and biological role. (b) Explain the regulation that prevents large sustained changes in human blood glucose…
Zadanie 10
Membranes support water balance, electrical signalling and energy conversion. (a) Outline what happens to cells in a piece of plant tissue transferred to a hypotonic solution. (b) Describe the establishment and maintenance of a resting membrane potential in a…