IB Biology Topic B2.1 Membranes and Membrane Transport (SL/HL) covers syllabus content as part of Topic B2: Cells under Theme B: Form and Function. Use these notes, questionbank, videos, flashcards, and lessons to review the topic, practise exam questions, and move between notes, videos, flashcards, and lessons where available.
B2.1 Membranes and membrane transport is part of Topic B2: Cells under Theme B: Form and Function.
What this topic covers
B2.1.1 Lipid bilayers as the basis of cell membranes
B2.1.2 Lipid bilayers as barriers
B2.1.3 Simple diffusion across membranes
B2.1.4 Integral and peripheral proteins in membranes
B2.1.5 Movement of water molecules across membranes by osmosis and the role of aquaporins
B2.1.6 Channel proteins for facilitated diffusion
B2.1.7 Pump proteins for active transport
B2.1.8 Selectivity in membrane permeability
B2.1.9 Structure and function of glycoproteins and glycolipids
B2.1.10 Fluid mosaic model of membrane structure
B2.1.11 Relationships between fatty acid composition of lipid bilayers and their fluidity (HL)
B2.1.12 Cholesterol and membrane fluidity in animal cells (HL)
B2.1.13 Membrane fluidity and the fusion and formation of vesicles (HL)
B2.1.14 Gated ion channels in neurons (HL)
B2.1.15 Sodium–potassium pumps as an example of exchange transporters (HL)
B2.1.16 Sodium-dependent glucose cotransporters as an example of indirect active transport (HL)
B2.1.17 Adhesion of cells to form tissues (HL)