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Combined Science
Key terms
Agar

GCSE Combined Science · key term

Agar

Definition

A jelly-like material used to provide a solid surface for growing microorganisms; nutrients can be added to support growth.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science A · J250

Specification B5 · Biology Paper 1, Biology Paper 2, Chemistry Paper 1, Chemistry Paper 2, Physics Paper 1, Physics Paper 2

For example, bacterial growth on nutrient agar can be used to investigate an antimicrobial substance.
Revise: Microbiological Techniques

OCR Combined Science A past papers

Related key terms

Aseptic technique
Culture
Magnification
Meniscus
Microorganism

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Agar — OCR GCSE Combined Science A Definition

Zone of inhibition