Studying and Measuring cells

HideShow resource information
  • Created by: Elly3014
  • Created on: 29-12-13 14:10
View mindmap
  • Studying and Measuring cells
    • Resolution
      • 'the ability to see detail'
      • = image / actual size
        • 1mm = 1000 um (micro)
    • Magnification
      • 'the ratio between the size of an object and its image'
      • = image / actual size
        • 1mm = 1000 um (micro)
    • Staining
      • most biological material is transparent
      • iodine - starch -black
      • methylene blue - nuclei - blue
      • TEM-uses electron dense material - salts of metal
      • SEM-use heavy metals to cover object
    • Microscopy
      • Electron Microscopes
        • SEM - used to image surfaces - 3D imaging
        • TEM - give images of the internal structure
        • non-living samples only
        • High magnification and resolution, but not in colour
      • Light Microscopes
        • Can use living samples
          • Observe Mitosis
        • Low resolution and magnification

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Cellular processes and structure resources »