AQA · Biology · 8461
GCSE Biology: Microscopy
Cell biology · AQA GCSE Biology (8461), specification point 4.1.1.5. Cards are generated from the exam board's own specification for "Microscopy", and every card links back to the page it came from. Specification © AQA — used with attribution.
7 flashcards · Free to study · No account needed
Study this deck
Preparing your cards…
All questions and answers
Read through the full deck, or practise recalling each answer above.
Why can an electron microscope study cells in finer detail than a light microscope?
Show answer
It has much higher magnification and resolving power, so smaller structures can be distinguished.
How has electron microscopy increased biologists' understanding of cells?
Show answer
Its higher magnification and resolution let biologists see and understand many more sub-cellular structures.
What is the formula for magnification in microscopy?
Show answer
magnification = size of image ÷ size of real object
What does the prefix 'micro' mean in units such as micrometre?
Show answer
One millionth (10⁻⁶) — 1 μm = 0.000001 m.
What does the prefix 'nano' mean in units such as nanometre?
Show answer
One billionth (10⁻⁹) — 1 nm = 0.000000001 m.
How many micrometres are there in one millimetre?
Show answer
1000 μm (1 mm = 10⁻³ m; 1 μm = 10⁻⁶ m).
A cell 0.05 mm wide appears 25 mm wide in an image. What is the magnification?
Show answer
×500 (25 ÷ 0.05 = 500).
Want to create your own cards? Create a free account. AI generation uses credits.