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Question		Answer
Why is iodine solution added to onion cells? start learning		To stain the cells so they are easier to see.
Why is coverslip lowered at an angle? start learning		To prevent air bubbles from forming.
Which objective lens should you start with? start learning		The lowest power objective (usually 4x)
Which focusing knob should be used first? start learning		The coarse adjustment knob.
Which focusing knob is used for clear focus? start learning		The fine adjustment knob.
What should you do after finding cells under low power? start learning		Switch to a higher power lens and refocus using the fine adjustment knob.
How is total magnification calculated? start learning		Total magnification=eyepiece lens x objective lens
What should the biological drawings include? start learning		Labels and magnification.
What is the formula for calculating actual size? start learning		Actual size=image size/magnification
How many micrometres are in 1mm? start learning		1000 micrometres
Put the osmosis practical steps in order: Record final mass, Place in solutions, Cut potato cylinders, Blot dry, Record initial mass start learning		1. Cut potato cylinders 2. Record initial mass 3. Place in solutions 4. Blot dry 5. Record final mass
Put these microscope steps in order: Use fine focus, Place slide on stage, Choose low power lens, Use coarse focus, Switch to higher power start learning		1. Place slide on stage 2. Choose low power lens 3. Use coarse focus 4. Use fine focus 5. Switch to higher power

Biology - Microscopy Practical