size of specimens and drawings

• What is the formula for magnification?(IAM)

  Image size = Actual size x maginification
• How many decimal places should you use?

  2
• How many significant figures?

  3 or the same as the question
• Magnification= Image size/Actual size
• How big is a micrometre in terms of centimetres

  Its 1000th of a centimetre
• 5rules for biological drawings

  Draw in pencil

  Optimise space provided- dont go above question and not below page labels

  Lines should be clear and continuous

  No colouring or shading

  Make sure proportions are correct
• What are the 4 rules for label lines?

  Drawn with a ruler

  Dont overlap

  Labels written horizontally

  No arrowheads