Introduction to cell membrane and transport

    • Cell membrane and transport is a core JC1 topic in H2 BIO A levels. This topic identifies the structure as well as function of the components of the cell membranes. In addition, the way different substances get transported across these membranes.

    Useful study resources for cell membrane and transport

    Most common phrasing errors students make in exams

    • Cholesterol is hydrophobic
    • The cell membrane is hydrophobic
    • The cell membrane is semi-permeable
    • Facilitated diffusion uses only channel proteins
    • A membrane bilayer is the same as double membrane

    Exam tips

    • Receptor-mediated endocytosis ≠ endocytosis
    • Phospholipids ≠ triglycerides (differences exist in structure, function and location in a cell)
    • Plasma membrane, cell membrane, cell surface membrane (CSM), as well as cytoplasmic membrane are terms that can be used interchangeably. However, if describing transport of molecules in and out of cells use CSM. And if describing transport of molecules across organelle membrane use organelle specific names e.g. mitochondrial membranes

    Questions and other matters

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    • You may also be interested to know how to boost your performance for A levels.