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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-BT-0011 markL1 FoundationCalculatorUses of microbes
Bread rises because yeast produces
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0021 markL1 FoundationCalculatorUses of microbes
Yoghurt is made using
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0121 markL1 FoundationCalculatorUses of microbes
Biofuel ethanol is made by
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0031 markL2 StandardCalculatorUses of microbes
Pectinase is used in fruit juice production to
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0041 markL2 StandardCalculatorUses of microbes
Lactase is used to make
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0051 markL2 StandardCalculatorUses of microbes
Microorganisms are useful in biotechnology mainly because they
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0061 markL2 StandardCalculatorFermenters
A fermenter has a water jacket to
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0071 markL2 StandardCalculatorFermenters
Fermenters are sterilised before use to
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0081 markL2 StandardCalculatorFermenters
Penicillin is produced by
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0091 markL2 StandardCalculatorUses of microbes
Biological washing powders contain
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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0102 marksL2 StandardCalculatorFermenters
A bacterial population doubles every 30 minutes. Starting from 10001000, how many bacteria are there after 3 hours?

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Salam Academy Original Practice · Proposed mark scheme
SA-OB-BT-0111 markL3 ExamCalculatorFermenters
In a fermenter the pH is monitored because
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Salam Academy Original Practice · Proposed mark scheme