Enzymes

Question	Answer
What are enzymes?	Biological catalysts
That is a catalyst?	A catalyst is a substance which increases the speed of a reaction, without being changed or used up in the reaction
What do enzymes reduce the need for?	High temperatures
What are enzymes made out of?	Proteins
What are proteins made out of?	Long chains of amino acids
What do chemical reactions usually involve?	Splitting apart or joining together
What makes every type of enzyme unique?	Their activation zones are different shapes
How many different types of reactions do enzymes usually catalyse?	One
What happens when a enzymes is damaged?	It becomes denatured, IT DOESN'T DIE!!!!!!!
How does changing the temperature affect the reaction?	The rate of the reaction will increase till it reaches its optimum temperature then the rate of reaction will decrease as the enzyme becomes denatured
Why does a high temperature denature an enzyme?	It breaks some of the bonds that are holding the enzyme together
What temperature does enzymes in the body normally work best at?	37°C
How does the pH affect enzymes?	If the pH is too high or too low then the bonds holding the enzyme together get damaged
How does changing the activation zone affect the enzyme?	It means it is denatured
What is usually the optimum pH?	Neutral (pH 7)
What pH does pepsin (enzyme in the stomach) work beat at?	pH 2

Resource summary

	Created by francesca graham over 8 years ago