Describe5 marksChallenge
A researcher is studying a cell surface membrane and has identified the components listed in Table 1. For each component, describe how its molecular structure (including hydrophobic/hydrophilic interactions and its arrangement within the membrane) enables it to carry out its stated role.
| Component | Key role |
|---|---|
| Phospholipid | Forms the basic bilayer structure |
| Cholesterol | Maintains membrane fluidity and stability |
| Glycolipid | Involved in cell recognition |
| Glycoprotein | Acts as a receptor for cell signalling |
| Channel protein | Allows selective transport of ions |