| light microscope | uses light and lenses to create magnified image of a substance |
| electron microscope | uses electrons to create magnified image of a substance |
| which has a higher resolution and magnification? light or electron microscope? | electron microscope has a higher resolution and magnification |
| steps of preparing slides for plant cells? | 1. add a drop of water to slide
2. cut up onion into layers, use tweezers to remove EPIDERMAL TISSUE from bottom of the layers.
3.Add to slide, use tweezers.
4. add iodine solution.
5. place cover slip. cover slip should be upright then use tweezers to slowly/carefully tilt cover slip till it covers the onion layers. |
| steps of preparing slides for animal cells? | 1. add a drop of water to slide.
2. use cotton swab to swab the inside of your mouth.
3. put cotton swab on the water droplets and mix water and lovely cheek cells together.
4. add methylene blue solution.
5. add cover slip. cover slip should be upright then use tweezers to slowly/carefully tilt cover slip till it covers the onion layers. |
| why do you need to use iodine solution/methylene blue? | iodine solution/methylene blue are dye that are used to stain the cells. this makes them more visible under the microscope. |
| steps to looking at your slide under a microscope? | 1. clip slide to stage.
2. select lower powered objective lens (lowest magnification).
3. use coarse adjustment knob lol to move stage up.
4. look down eyepiece. use coarse adjustment knob again to make stage down till image is in rough focus.
5. use fine adjustment knob to get a clear image of slide.
6. if a greater magnification is needed, change to higher powered objective lens and refocus. |
| can you use colour or shading when drawing observations of a microscope? | nope, no colouring or shading |
| how do you label a drawing of your observations? | sharp pencil. title above drawing. magnification below drawing. use straight lines that do not cross over each other. drawing must take up half of the space given. |
| magnification equation? | magnification: image size ÷ real size |
| what is the unit for magnification? | µm - nanometers |
