What affect does extremely high pH have on enzymes?
Denatures them
Kills them
Destroys them
What does the term optimum mean for enzyme temperature?
The lowest temperature at which the enzyme works
The temperature which gives the highest enzyme activity
The highest temperature before denaturing occurs
What type of enzymes break down carbohydrates?
Protease
Lipase
Carbohydrase
What type of enzymes break down fats?
What type of enzymes break down proteins?
What type of enzyme is amylase?
What is the test for reducing sugars?
Benedict's solution
Biuret reagent
Emulsion test
What does a calorimeter measure?
The presence of starch in a food
The energy stored within a food
The colour of a food
Which of these statements about enzymes is true?
They work best at low pH
Temperature does not affect their activity
They can be reused
What is the correct calculation for the rate of an enzyme reaction?
Amount of substrate used ÷ time taken
Amount of substrate used + time taken
Amount of substrate used × time taken