Enzymes (Edexcel GCSE Biology Combined Science): Flashcards
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Enzymes
Enzymes
Biological catalysts that speed up reactions without being used up
Optimum temperature for enzymes
Optimum temperature for enzymes
37°C (normal body temperature)
Effect of high temperature on enzymes
Effect of high temperature on enzymes
Enzyme becomes denatured, active site changes shape
Optimum pH for most enzymes
Optimum pH for most enzymes
pH 7 (neutral)
What amylase breaks down
What amylase breaks down
Starch into maltose
What proteases convert
What proteases convert
Proteins into amino acids
What lipases convert
What lipases convert
Lipids into fatty acids and glycerol
Benedict's test positive result
Benedict's test positive result
Brick red colour (indicates sugars present)
Iodine test positive result
Iodine test positive result
Blue-black colour (indicates starch present)
Two main functions of bile
Two main functions of bile
Neutralising acid and emulsifying fats