Zadanie 3b
A freshwater ciliate has contractile vacuoles. Outline why these structures are important.
Water potential
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 30 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 20 z 57 arkuszy w bazie.
Zadania z tego działu: 30 Otwórz w wyszukiwarce z filtrami
Zadanie 4a
(i) Identify the graph type. (ii) Estimate the concentration isotonic to this tissue.
- Materiał graficzny
Zadanie 4b
Compare and contrast the results at 0.75 and 1.00 mol L⁻¹.
- Materiał graficzny
Zadanie 4c
Explain what could happen if a freshwater single-celled organism without a cell wall were exposed to these solutions.
- Materiał graficzny
Zadanie 2a
State the direction of net water movement across the membranes during the first three minutes.
- Materiał graficzny
Zadanie 2b
(i) Distinguish the volume changes in the mRNA-treated cells from those in the controls. (ii) Explain how the introduced aquaporins produce this difference.
- Materiał graficzny
Zadanie 3b
Molecules move across the plasma membrane by several routes. Describe three distinct membrane-transport processes.
Zadanie 6
Water affects both plant physiology and the habitats of organisms. (a) Outline benefits to organisms arising from cohesion of water molecules. (b) Outline how environmental conditions influence transpiration. (c) Explain osmosis and its effects on plant cells.…
Zadanie 12
A schematic records the shapes of mammalian red blood cells after immersion in a test solution. What can be deduced from their appearance? A. The external solution has a lower solute concentration and the cells have swollen B. The external solution is…
- Materiał graficzny
Zadanie 7
Water properties affect both individual cells and whole plants. (a) Draw and label two interacting water molecules. (b) Outline what happens when animal and plant cells are immersed in pure water. (c) Explain transpiration and the adaptations of xylem vessels…