Practise IB Biology SL 2.1.10 using exact SL questions on phospholipid bilayers, embedded proteins, membrane fluidity and the labelled fluid mosaic model.
Draw a labelled diagram to show the molecular structure of a membrane.
Award [1] for each of the following clearly drawn and correctly labelled:
Phospholipid bilayer; double row of opposing phospholipids, tails to inside.
Hydrophilic/phosphate/polar heads and hydrophobic/hydrocarbon/fatty acid/non-polar tails labelled.
Integral protein; embedded in the phospholipid bilayer.
Protein channel/channel protein; integral protein showing clear channel/pore.
Peripheral protein; shown on surface or slightly embedded on either side.
Glycoprotein; with carbohydrate attached on outer side.
Cholesterol; shown embedded in bilayer and smaller than the hydrophobic tail.
A verified official answer image is still needed because this answer requires diagram/spatial placement.
Preserve all accept/do not accept/award/max/both-needed guidance from the official markscheme.