Flashcards
Enzymes
Cards in this deck (16)
- 1What are enzymes?Biological catalysts
- 2That is a catalyst?A catalyst is a substance which increases the speed of a reaction, without being changed or used up in the reaction
- 3What do enzymes reduce the need for?High temperatures
- 4What are enzymes made out of?Proteins
- 5What are proteins made out of?Long chains of amino acids
- 6What do chemical reactions usually involve?Splitting apart or joining together
- 7What makes every type of enzyme unique?Their activation zones are different shapes
- 8How many different types of reactions do enzymes usually catalyse?One
- 9What happens when a enzymes is damaged?It becomes denatured, IT DOESN'T DIE!!!!!!!
- 10How 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
- 11Why does a high temperature denature an enzyme?It breaks some of the bonds that are holding the enzyme together
- 12What temperature does enzymes in the body normally work best at?37°C
- 13How does the pH affect enzymes?If the pH is too high or too low then the bonds holding the enzyme together get damaged
- 14How does changing the activation zone affect the enzyme?It means it is denatured
- 15What is usually the optimum pH?Neutral (pH 7)
- 16What pH does pepsin (enzyme in the stomach) work beat at?pH 2
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- GCSE Biology (B2b) Flashcards on Enzymes, created by francesca graham on 06/04/2016.
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- francesca graham
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