Cambridge IGCSE Biology practice

Paper 3 structured question: Size of specimens

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Size of specimens

Exam-style question

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Paper 3Theory (Core)2 marks

A diagram shows a magnified image of a cell. The image measures 50 mm across. The actual size of the cell is 5 mm.

Diagram Description

The image of the cell is 50 mm wide, and the actual cell size is 5 mm.

a
Calculate the magnification of the cell image.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)2 marks

Description

The image length of the leaf is 80 mm, and the magnification is 20.

a
Calculate the actual length of the leaf in millimetres.
Your answer
Aim for approximately 2 distinct marking points.
[2]