Difference between revisions of "GCSE Biology Required Practical: Using a Microscope"
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#Place a drop of 0.01M [[Iodine Solution]] onto the [[Cell (Biology)|cells]]. | #Place a drop of 0.01M [[Iodine Solution]] onto the [[Cell (Biology)|cells]]. | ||
#Place a cover slip on the [[Cell (Biology)|cells]] and use tissue paper to remove any excess [[Iodine Solution|iodine solution]] from the edges. | #Place a cover slip on the [[Cell (Biology)|cells]] and use tissue paper to remove any excess [[Iodine Solution|iodine solution]] from the edges. | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:MicroscopePlantCells1.png|center|200px]] | ||
| + | |[[File:MicroscopePlantCells2.png|center|200px]] | ||
| + | |[[File:MicroscopePlantCells3.png|center|200px]] | ||
| + | |} | ||
| + | |||
#Place the [[slide]] onto the [[stage]] of the [[microscope]] and focus the image. | #Place the [[slide]] onto the [[stage]] of the [[microscope]] and focus the image. | ||
#Note the [[magnfication]] of the [[Eyepiece Lens|eyepiece lens]] and the [[Objective Lens|objective lens]]. | #Note the [[magnfication]] of the [[Eyepiece Lens|eyepiece lens]] and the [[Objective Lens|objective lens]]. | ||
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#Place a drop of [[Methylene Blue]] onto the [[Cell (Biology)|cells]]. | #Place a drop of [[Methylene Blue]] onto the [[Cell (Biology)|cells]]. | ||
#Place a cover slip on the [[Cell (Biology)|cells]] and use tissue paper to remove any excess [[Methylene Blue]] from the edges. | #Place a cover slip on the [[Cell (Biology)|cells]] and use tissue paper to remove any excess [[Methylene Blue]] from the edges. | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:MicroscopeAnimalCells1.png|center|200px]] | ||
| + | |[[File:MicroscopeAnimalCells2.png|center|200px]] | ||
| + | |[[File:MicroscopeAnimalCells3.png|center|200px]] | ||
| + | |} | ||
#Place the [[slide]] onto the [[stage]] of the [[microscope]] and focus the image. | #Place the [[slide]] onto the [[stage]] of the [[microscope]] and focus the image. | ||
#Note the [[magnfication]] of the [[Eyepiece Lens|eyepiece lens]] and the [[Objective Lens|objective lens]]. | #Note the [[magnfication]] of the [[Eyepiece Lens|eyepiece lens]] and the [[Objective Lens|objective lens]]. | ||
#Sketch a [[Cell (Biology)|cell]] including a magnification scale to indicate how much larger you drawing is than the actual [[Cell (Biology)|cell]]. | #Sketch a [[Cell (Biology)|cell]] including a magnification scale to indicate how much larger you drawing is than the actual [[Cell (Biology)|cell]]. | ||
Revision as of 14:03, 10 April 2019
Contents
Key Stage 4
Meaning
Use a microscope to make labelled diagrams of plant and animal cells with a magnification scale.
Method
Observing Plant Cells
- Place a sample of onion cells on to a slide.
- Place a drop of 0.01M Iodine Solution onto the cells.
- Place a cover slip on the cells and use tissue paper to remove any excess iodine solution from the edges.
 |
 |
 |
- Place the slide onto the stage of the microscope and focus the image.
- Note the magnfication of the eyepiece lens and the objective lens.
- Sketch a cell including a magnification scale to indicate how much larger you drawing is than the actual cell.
Observing Animal Cells
- Place a sample of animal cells on to a slide.
- Place a drop of Methylene Blue onto the cells.
- Place a cover slip on the cells and use tissue paper to remove any excess Methylene Blue from the edges.
 |
 |
 |
- Place the slide onto the stage of the microscope and focus the image.
- Note the magnfication of the eyepiece lens and the objective lens.
- Sketch a cell including a magnification scale to indicate how much larger you drawing is than the actual cell.