Investigating antibiotics & antiseptics (Edexcel GCSE Biology): Flashcards
📚Flashcards
Practise the cards
9 cards from this deck
ShowHide
Practise the cards
9 cards from this deck
What do inhibition zones compare?
What do inhibition zones compare?
Effectiveness of antibiotics/antiseptics/plant extracts
Formula for inhibition zone area
Formula for inhibition zone area
Value of to use in calculations
Value of to use in calculations
3.14
How to find radius from diameter
How to find radius from diameter
Divide diameter by 2
What to measure in inhibition zone
What to measure in inhibition zone
Diameter
Larger inhibition zone indicates
Larger inhibition zone indicates
More bacteria killed
Effect of larger zone on effectiveness
Effect of larger zone on effectiveness
More effective antibiotic
Radius if diameter = 10 mm
Radius if diameter = 10 mm
5 mm
Area if mm (using )
Area if mm (using )
78.5 mm²