Chemistry · Grades 10–12
Membranes and amphipathic molecules · Revision sheet
Relate molecular regions to behavior in water.
Learn the idea
Amphipathic
A molecule can contain both water-interacting and water-avoiding regions.
Bilayer
Phospholipids can organize with hydrophilic heads facing water and hydrophobic tails shielded inside.
Permeability
Size, polarity, charge and transport proteins influence membrane passage.
Context
A membrane is dynamic, with proteins and other components; it is not simply a solid wall.
Explain without looking
- Why can temperature alter membrane behavior?
- Which description best matches a biological membrane?
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Independent educational review required. Grade bands are approximate; these are not officially aligned curricula.