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ENZYMES Quick Quiz 1. Press the button when you’re sure… remember to take your time as you only get one chance!. What 2 substances are made in the break down of the hydrogen peroxide by manganese dioxide?. Water and carbon dioxide Water and carbon dioxide Oxygen and food
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ENZYMES Quick Quiz 1 Press the button when you’re sure… remember to take your time as you only get one chance! ENZYMES 1
What 2 substances are made in the break down of the hydrogen peroxide by manganese dioxide? • Water and carbon dioxide • Water and carbon dioxide • Oxygen and food • Oxygen and water ENZYMES 1
Which substance could we easily see being produced in this reaction? • Water • carbon dioxide • Oxygen • detergent ENZYMES 1
What effect does the catalyst have on the break down of hydrogen peroxide? • Slows it down • Speeds it up • No effect • Turns hydrogen peroxide black ENZYMES 1
How could we prove that the gas given off was in fact oxygen gas? • The gas would blow out a wooden splint • The gas would relight a glowing splint • The gas would blow out a glowing splint • The gas would relight a wooden splint ENZYMES 1
Our livers contain an enzyme called catalase, which breaks down toxic (harmful) hydrogen peroxide into water and oxygen. • TRUE • FALSE ENZYMES 1
Both the enzyme catalase and the chemical manganese dioxide break down hydrogen peroxide. • TRUE • FALSE ENZYMES 1
Only catalase enzyme breaks down hydrogen peroxide. • TRUE • FALSE ENZYMES 1
The enzyme catalase speeds up the break down of hydrogen peroxide which is a harmful substance. • TRUE • FALSE ENZYMES 1
There is no difference between a biological washing powder and a non-biological washing powder in terms of the energy they use. • TRUE • FALSE ENZYMES 1
Enzymes are biological catalysts which speed up the rate of chemical reactions. • TRUE • FALSE ENZYMES 1
Enzymes can be extracted from plants and animals and used to clot milk to make cheese. • TRUE • FALSE ENZYMES 1
Non-biological washing powders have enzymes added to them. • TRUE • FALSE ENZYMES 1
Human enzymes work best below a temperature of 30°C. • TRUE • FALSE ENZYMES 1
Enzymes are biological catalysts which slow down the rate of chemical reactions. • TRUE • FALSE ENZYMES 1
Manganese dioxide is an enzyme, as it speeds up the chemical reaction. • TRUE • FALSE ENZYMES 1