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GCSE Biology · key term
The circular area visible through a microscope at one time.
Used by AQA, Edexcel and OCR
Specification 4.1.1.2 · Paper 1
Revise: Microscopy Practical and Size EstimationLow power gives a wide field of view, so cells are easier to locate and the general arrangement of a tissue can be seen. Centre the area of interest before changing to a higher-power objective. Higher power gives a smaller field of view but can reveal more detail in one part of the specimen.
Specification 1.6 · Paper 1, Paper 2
Revise: Microscopy InvestigationLow power provides the widest field of view, making the specimen easier to find and centre.
Start on low power. It provides a wider field of view, making the specimen easier to locate and reducing the risk of the objective lens striking the slide.
In a microscopy method, state that the lowest-powered objective is used first. This gives a wider field of view, making the specimen easier to find.
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Specification B1.1a · Paper 1 (Foundation), Paper 3 (Higher)
The area of the specimen visible through the microscope at one time.
Revise: Light microscopyStart with the lowest-power objective lens. This gives the widest field of view, so the specimen is easier to find.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The area visible through a microscope at one time.
Revise: Cells and MicroscopyBegin with the lowest-powered objective lens. This provides a wide field of view, so it is easier to locate the specimen and see the overall arrangement of the cells.