Magnification (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the formula for total magnification using a microscope?
What is the formula for total magnification using a microscope?
Eyepiece × objective lens magnification
What formula calculates magnification when image and real sizes are known?
What formula calculates magnification when image and real sizes are known?
Magnification = image size / real size
What is micrometre (μm) in standard form (metres)?
What is micrometre (μm) in standard form (metres)?
m
To convert nanometres to micrometres, what operation do you perform?
To convert nanometres to micrometres, what operation do you perform?
Divide by 1000
What is millimetre in standard form (metres)?
What is millimetre in standard form (metres)?
m
How is written in standard form?
How is written in standard form?
How is written in standard form?
How is written in standard form?
What does equal as a decimal?
What does equal as a decimal?
What is the typical size range of most human cells?
What is the typical size range of most human cells?
10-30 μm
What is the typical size range of bacteria?
What is the typical size range of bacteria?
1-5 μm
What is the width of DNA molecules?
What is the width of DNA molecules?
About 2 nm
How many 20 μm cells fit across 1 mm (1000 μm)?
How many 20 μm cells fit across 1 mm (1000 μm)?
Approximately 50 cells
