Cell Structure

• What is a micrometer?

  1 x 10^-6
• What is a nanometer?


  1 x 10^-9
• List all the components of both plants and animal cells?

  . Nucleus

  . Cytoplasm

  . Cell Membrane

  . Mitochondria

  . Ribosomes
• List the additional components of the plant cell?

  . Cell wall

  . Permanent Vacuole

  . Chloroplasts
• Describe the structure of the cytoplasm?

  . Fluid component of the cell.

  . Contains: Organelles, Enzymes and Dissolved Ions and Nutrients
• Describe how a Sperm cell has adapted?

  . Haploid Nucleus

  . Tail

  . Mitochondria

  . Streamlined shape
• Describe how has a nerve cell adapted?

  . Dendrites

  . Long axon

  . Myelin Sheath
• Describe how the xylem cell has adapted?

  . No upper or lower margins between cells

  . Thick, woody side walls
• Describe how the Phloem cell has adapted?

  . Sieve Plates

  . Companion Cells
• What is Cell Differentiation?

  The process by which cells become specialised
• Why is Cell Differentiation important?

  Allows production of different tissues and organs that perform various vital functions in the human body
• What are the advantages of using a light microscope?

  . Inexpensive

  . Easy to use

  . Portable

  . Observe both dead and living species
• What are the disadvantages of using an electron microscope?

  . Expensive

  . Large or less portable

  . Require training to use

  . Only Dead specimens can be observed