Required Practical: Decay (AQA GCSE Biology): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
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Practise the cards
12 cards from this deck
Variable investigated in decay practical
Variable investigated in decay practical
Effect of temperature on decomposition rate
Enzyme used in decay practical
Enzyme used in decay practical
Lipase
pH indicator in decay practical
pH indicator in decay practical
Phenolphthalein
Colour of alkaline solution in practical
Colour of alkaline solution in practical
Pink
Role of sodium carbonate in practical
Role of sodium carbonate in practical
Raises pH/alkalizes solution, making it pink
What lipase breaks down in milk
What lipase breaks down in milk
Fats
Product from lipase breaking down fats
Product from lipase breaking down fats
Fatty acids
Meaning of pink colour disappearing
Meaning of pink colour disappearing
Solution became acidic, pH dropped
How temperature affects decomposition rate
How temperature affects decomposition rate
Rate increases until optimum temp reached
What happens beyond optimum temperature
What happens beyond optimum temperature
Enzyme denatures
3 controlled variables in decay practical
3 controlled variables in decay practical
Lipase conc., milk volume, sodium carbonate amount
Applications of this decay knowledge
Applications of this decay knowledge
Agriculture, waste management, food preservation