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Paper 1 · Cell Structure and Membranes

The diagram shows the fluid mosaic model of a membrane. What is the name and function of molecule X?

cell membranes - ZIMSEC Biology past paper diagram
AName glycolipid, Function decreases membrane fluidity at high temperatures
BName cholesterol, Function increases membrane fluidity at low temperatures
CName glycolipid, Function decreases membrane fluidity at low temperatures
DName cholesterol, Function increases membrane fluidity at high temperatures

ZIMSEC Biology 9190/1 Paper 1, November 2003, Q1

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