Magnification (Edexcel GCSE Biology): Quizzes

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Magnification
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12 questions from this quiz

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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?

Magnification = image size / real size

What is 11 micrometre (μm) in standard form (metres)?

1×1061 \times 10^{-6} m

To convert nanometres to micrometres, what operation do you perform?

Divide by 1000

What is 11 millimetre in standard form (metres)?

1×1031 \times 10^{-3} m

How is 3,000,0003,000,000 written in standard form?

3×1063 \times 10^{6}

How is 0.0000020.000002 written in standard form?

2×1062 \times 10^{-6}

What does 1.5×1051.5 \times 10^{-5} equal as a decimal?

0.0000150.000015

What is the typical size range of most human cells?

10-30 μm

What is the typical size range of bacteria?

1-5 μm

What is the width of DNA molecules?

About 2 nm

How many 20 μm cells fit across 1 mm (1000 μm)?

Approximately 50 cells

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