Investigating enzymes (AQA GCSE Biology): Flashcards

Protein that speeds up chemical reactions in living things

Enzyme that breaks down starch into simple sugars

Starch into simple sugars

Changes colour when starch is present

Keeps pH steady during experiment

Mixture that resists changes to its pH

$\frac{1}{\text{time (s)}}$ (units: 1/s)

High rates; enzyme working well

Low rates; enzyme not working well

pH giving greatest rate of reaction

25°C

Affects enzyme activity; ensures fair test

Rate of reaction; pH of buffer solution