Required Practical: Enzymes (OCR GCSE Biology A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
15 cards from this deck
Role of enzymes in body
Role of enzymes in body
Biological catalysts that speed up reactions
What amylase breaks down
What amylase breaks down
Starch into maltose
Iodine solution tests for
Iodine solution tests for
Starch
Testing interval in practical
Testing interval in practical
Every 30 seconds
Iodine color when starch fully broken down
Iodine color when starch fully broken down
No longer turns blue-black
Optimum temperature for human enzymes
Optimum temperature for human enzymes
Around 37°C
What happens beyond optimum temp
What happens beyond optimum temp
Enzyme becomes denatured
Reaction rate after denaturation
Reaction rate after denaturation
Decreases sharply
Solutions used to control pH
Solutions used to control pH
pH buffer solutions
When enzyme reaction fastest
When enzyme reaction fastest
At optimum pH
Effect of pH deviations
Effect of pH deviations
Can cause enzyme denaturation
Optimum conditions for enzymes
Optimum conditions for enzymes
Specific temperature and pH
Temps tested in experiment
Temps tested in experiment
0°C, 20°C, 40°C, 60°C, 80°C
pH values tested in experiment
pH values tested in experiment
pH 4, 6, 7, 8, 10
Reaction rate as temp increases to optimum
Reaction rate as temp increases to optimum
Increases