Cell Structures (Edexcel IGCSE Biology (Modular))

Cell Structures

• Cells are separated from their surrounding environment by a cell membrane

• Within the cell membrane is the cytoplasm

• Eukaryotic cells have organelles contained within their cytoplasm
  

  • Organelles are subcellular compartments where specific processes take place within the cell

• Within the cytoplasm of eukaryotic cells the following organelles are present

  • Nucleus

  • Mitochondria (singular mitochondrion)

  • Ribosomes

• Plant cells contain the following additional structures 

  • Cell wall

  • Chloroplasts

  • Permanent vacuole

When viewed under a microscope the structures inside a plant cell are visible. Ribosomes and mitochondria are too small to view under a light microscope but are visible with the higher resolution of an electron microscope.

Cell Structures & Functions

Cellular Structures & Functions Table