Science Year 7 Comprehensive Revision Notes: Cells, Materials, Forces, and Energy

Plant cells have distinct structures:

• Nucleus: Controls cellular activities.

• Cell Membrane: Barrier controlling substance movement.

• Cytoplasm: Jelly-like substance for chemical reactions.

• Cell Wall: Provides rigidity and support.

• Sap Vacuole: Storage area preventing cell shrinkage.

• Chloroplasts: Photosynthesis and food production.

• Mitochondria: Energy production.
  Unique structures: cell wall, sap vacuole, chloroplasts (vs. animal cells).