Difference between revisions of "GCSE Biology Required Practical: Using a Microscope"
| Line 4: | Line 4: | ||
===Method=== | ===Method=== | ||
| + | ====Observing Plant Cells==== | ||
#Place a [[sample]] of onion [[Cell (Biology)|cells]] on to a [[slide]]. | #Place a [[sample]] of onion [[Cell (Biology)|cells]] on to a [[slide]]. | ||
#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]]. | ||
| Line 10: | Line 11: | ||
#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|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|magnification scale]] to indicate how much larger you drawing is than the actual [[Cell (Biology)|cell]]. | ||
| − | + | ====Observing Animal Cells==== | |
#Place a [[sample]] of animal [[Cell (Biology)|cells]] on to a [[slide]]. | #Place a [[sample]] of animal [[Cell (Biology)|cells]] on to a [[slide]]. | ||
#Place a drop of [[Methylene Blue]] onto the [[Cell (Biology)|cells]]. | #Place a drop of [[Methylene Blue]] onto the [[Cell (Biology)|cells]]. | ||
Revision as of 16:02, 21 November 2018
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.