Organisation: Digestion (AQA GCSE Biology): Flashcards
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Practise the cards
14 cards from this deck
Role of enzymes
Role of enzymes
Biological catalysts that speed up reactions
Product when amylase breaks down starch
Product when amylase breaks down starch
Maltose
Solution used to test for starch
Solution used to test for starch
Iodine solution
Iodine colour with starch present
Iodine colour with starch present
Blue-black
Testing frequency in enzyme practical
Testing frequency in enzyme practical
Every 30 seconds
Optimum temp for human enzymes
Optimum temp for human enzymes
Around 37°C
What happens beyond optimum temp
What happens beyond optimum temp
Enzyme becomes denatured
Effect of temp up to optimum
Effect of temp up to optimum
Rate of reaction increases
Optimum conditions definition
Optimum conditions definition
Specific temp & pH where enzymes work best
Effect of pH deviation from optimum
Effect of pH deviation from optimum
Can denature the enzyme
Iodine not turning blue-black indicates
Iodine not turning blue-black indicates
Starch has been fully broken down
Temps used in practical (°C)
Temps used in practical (°C)
0, 20, 40, 60, 80
Effect of temp beyond optimum on rate
Effect of temp beyond optimum on rate
Rate decreases sharply
pH levels used in practical
pH levels used in practical
4, 6, 7, 8, 10