Plant cells

• Describe the structure of the chloroplasts.

  • Surrounded by a double membrane
  • Contains thylakoids (folded membranes embedded with pigment)
  • The fluid-filled stroma contains enzymes for photosynthesis
  • Found in plants
  • Contains 70S ribosomes and circular DNA
• Describe the function of the chloroplasts.

  Site of photosynthesis to produce organic substances (light dependent and light independent reactions)
• Describe the structure of the cell wall.

  • In plants and fungal cells
  • Plants- made of microfibrils of the cellulose polymer.
  • Fungi -made of chitin, a nitrogen-containing polysaccharide
• Describe the function of the cell wall.

  Provides structural strength to the cell
• Describe the structure of the vacuole.

  Filled with fluid surrounded by a single membrane called a tonoplast.
• Describe the function of the vacuole.

  • Makes cells turgid and therefore provides support
  • Temporary store of sugars and amino acids
  • The pigments are responsible for coloured petals which attract pollinators.