Biology GCSE
convection current
What convection current means in Biology GCSE, as defined for OCR.
Definition of convection current
Check what you remember
Read the wording for your board, then hide it and explain convection current in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A roaring blue Bunsen flame creates an upward current; working within about 20 cm of it prevents airborne microbes settling on open agar plates.
Topics that use convection current
- Microbiological techniques (OCR GCSE)
Related terms
- differential staining and contrast
- disc diffusion antimicrobial assay
- high-power microscopic resolution
- mass, gas volume and pH measurement
- microbial smear preparation and heat-fixing
- microbiological scientific drawing
- negative control verification
- safe zone measurement through closed dish
Using convection current in the exam
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