Organelles-Chapter 2 IGCSE

  • Cell membrane

-made of protein and fat (Lipoproteinous)

-Has pores

-Controls what goes in and out (Partially permeable)

  • Cell wall

-made of cellulose; a complex sugar

-Cellulose fibres criss-cross one another to form a strong covering for the cell.

- The strong covering helps support the cell and withstands pressure (prevents the cell from bursting)

-Fully permeable, materials entering and leaving is not controlled

  • Cytoplasm

-Clear Jelly;70% water

-Where metabolic reactions take place (the chemical reaction of life)

-contains dissolved substances, especially proteins

  • Vacuole

-Plant cell- Cell sap filled with sugar, minerals


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