Microscopes

Question 1

Light Microscopes

Answer 1

• Glass lenses
• Can only see large cell features
• Can’t resolve objects closely
• 400x magnification
• Living organisms, colour, movement
• Easy to prepare

Question 2

Electron Microscopes

Answer 2

• Beams of electrons rather than light
• Great resolution
• Can see smaller features
• Much higher than 400x resolution
• Dead material, no colour, no movement
• More time to prepare

Question 3

Microscope calculations from a drawing

Answer 3

1. Measure the length of the cell in mm, x1000 to get um
2. Measure the length of the scale bar and find Actual length, ex.
   14mm=50um
   30mm=x(actual)
3. divide drawing length in um by actual length