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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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2645 questions · page 40 of 133 · choose a topic above to narrow them down

SA-AB-GU-0011 markL1 FoundationCalculatorMedicine

Human insulin for diabetics is now mostly made by

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SA-AB-HO-0011 markL1 FoundationCalculatorPrinciples

Negative feedback

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SA-AB-ID-0011 markL1 FoundationCalculatorDiseases

Malaria is caused by

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SA-AB-IM-0011 markL1 FoundationCalculatorImmune cells

Antibodies are secreted by

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SA-AB-IM-0021 markL1 FoundationCalculatorAntibodies

How many polypeptide chains does one antibody molecule have?

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SA-AB-KR-0011 markL1 FoundationCalculatorKrebs

The Krebs cycle takes place in the

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SA-AB-LD-0011 markL1 FoundationCalculatorReactions

The light-dependent reactions occur in the

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SA-AB-LD-0051 markL1 FoundationCalculatorChromatography

A pigment moves 3.6 cm; the solvent front 8.0 cm. Calculate its Rf.

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SA-AB-MC-0011 markL1 FoundationCalculatorCell cycle

DNA is replicated during

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SA-AB-MC-0041 markL1 FoundationCalculatorMitotic index

24 of 200 cells are in mitosis. Calculate the mitotic index.

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SA-AB-ME-0011 markL1 FoundationCalculatorFluid mosaic

In a membrane, phospholipid tails face

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SA-AB-ME2-0011 markL1 FoundationCalculatorMeiosis

Meiosis produces

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SA-AB-MT-0031 markL1 FoundationCalculatorPassive

The water potential of pure water is

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SA-AB-NE-0011 markL1 FoundationCalculatorAction potentials

During depolarisation,

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SA-AB-NE-0031 markL1 FoundationCalculatorAction potentials

Resting potential −70 mV; peak +40 mV. What is the change in potential (mV)?

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SA-AB-PM-0011 markL1 FoundationCalculatorStructure

The middle lamella between plant cells is made mainly of

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SA-AB-PR-0012 marksL1 FoundationCalculatorData processing

A potato cylinder's mass changes from 2.50 g to 2.30 g. Calculate the percentage change.

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SA-AB-PS-0011 markL1 FoundationCalculatorGenetic code

A codon is found on

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SA-AB-PT-0011 markL1 FoundationCalculatorXylem

Xylem vessel walls contain

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SA-AB-PW-0011 markL1 FoundationCalculatorProtein structure

The primary structure of a protein is

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