The Microscope Lab Drawing and Microscope Techniques Bielke

The Microscope Lab Drawing and Microscope Techniques Bielke

Parts of the Microscope

Proper Lab Drawing Techniques 1. Use a ruler to make lines straight 2. Line up the words 3. Draw in pencil and include parallel label lines 4. Include total magnification –ex. - 40 x 5. Use a template for “field of vision” and draw what you see 6. Spell correctly 7. Include realistic colors by “shading” the figures 8. Include a title 9. If using a source; cite it

• Remember “neatness counts”

How to calculate magnification • On our microscopes, the ocular = 10 x The objectives equal – low = 4 x medium = 10 x high = 43 x To get total magnification – Multiply the ocular by the objective in place Ex. Low power – 10 x 4 = 40 x

Preparation of a slide Place one drop of solution Hold coverslip perpendic ular and let drop

What’s wrong with this drawing?

What was wrong with that ‘drawing’? • Words were not lined up • No parallel lines • Magnification? • Source? http: //www. blackpoolsixth. ac. uk/subjects/biology/resource/micro/source/36. html

Onion Skin Cell Wall Cytoplasm Nucleus Cell Membrane http: //www. pgjr. alpine. k 12. ut. us/science/whitaker/Cell_Chemistry/Plasmolysis. html

Plasmolysis in the Onion Cell Turgid Undergoing plasmolysis Flaccid http: //www. pgjr. alpine. k 12. ut. us/science/whitaker/Cell_Chemistry/Plasmolysis. html

Lactobacillus http: //www. niles-hs. k 12. il. us/amilef/AP%20 Bio%20 Webquest/Unit%209 -%20 Teresa%20 Lim/Unit%209. html

Cheek Cell under Microscope http: //sac. edu/Home. Pages/nigro_dan/Cheek_cell. jpg

Your Drawing of a Cheek Cell Magnification: 400 X

Your Drawing of a Cheek Cell Membrane Magnification: 400 X

Your Drawing of a Cheek Cell Membrane Nucleus Magnification: 400 X

Your Drawing of a Cheek Cell Membrane Nucleus Cytoplasm Magnification: 400 X Don’t forget to shade in using realistic color