Zadanie 1a
Animal epithelial cells often have less regular outlines than cells in plant tissues. Explain this difference.
The lipid framework of membranes
Explain how amphipathic molecules form continuous bilayers in an aqueous environment.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2022–2024.
Zadania sprawdzające tę umiejętność: 5 Otwórz w wyszukiwarce z filtrami
Zadanie 6
A cell in a freshwater organism is bounded by a phospholipid membrane. (a) Outline how phospholipid properties determine the membrane’s structure. (b) Describe the movement of substances through the membrane by facilitated diffusion. (c) Explain how electrical…
Zadanie 20
A diet provides very little fat over an extended period. Suggest one possible resulting problem.
Zadanie 2a
The diagram represents part of a cell membrane. Annotate the diagram to show why phospholipids are amphipathic.
- Materiał graficzny
Zadanie 5
In a model investigation, lipids extracted from membranes are spread as a single molecular layer. The areas are shown. Which arrangement best accounts for the result and the contact of both membrane surfaces with water? Circles represent polar heads and paired…
- Materiał graficzny