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Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-OB-SC-0012 marksL1 FoundationCalculatorMagnification
An image is 4040 mm long. The actual object is 0.10.1 mm long. Calculate the magnification.

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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0021 markL1 FoundationCalculatorMagnification
Convert 0.050.05 mm into micrometres.

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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0041 markL1 FoundationCalculatorSpecialised cells
Red blood cells have no nucleus so that
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0071 markL1 FoundationCalculatorLevels of organisation
A group of similar cells with the same function is a
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0121 markL1 FoundationCalculatorLevels of organisation
Organs working together form
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0032 marksL2 StandardCalculatorMagnification
A cell drawing is 2525 mm wide at ×500. Calculate the actual width in μm.

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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0051 markL2 StandardCalculatorSpecialised cells
Palisade mesophyll cells are adapted for photosynthesis because they
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0061 markL2 StandardCalculatorSpecialised cells
Ciliated cells in the trachea
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0081 markL2 StandardCalculatorLevels of organisation
Which is an organ?
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0091 markL2 StandardCalculatorSpecialised cells
Sperm cells contain many mitochondria to
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0102 marksL2 StandardCalculatorMagnification
A bacterium is 2 μm2\ \mu\text{m} long. At ×5000, how long is its image in mm?

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Salam Academy Original Practice · Proposed mark scheme
SA-OB-SC-0113 marksL3 ExamCalculatorMagnification
A cell is 80 μm80\ \mu\text{m} across. In a photograph its image is 4848 mm across. Calculate the magnification.

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Salam Academy Original Practice · Proposed mark scheme