8. What are the chemical
substances that compose the
plasma membrane?

Gap-fill exercise

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The main constituents the plasma
membrane phospholipids, proteins
and . The phospholipds,
amphipathic , are regularly
organized the membrane according
their polarity: two of
phospholipids form lipid bilayer with
polar part of phospholipids
pointing to exterior of the and
the non-polar chains in the
. Proteins can be
embedded in the bilayer and there
also some carbohydrates to
proteins and phospholipids in the
face of the .