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Goal 4.1.3 Enzyme are fun
Enzymes
13
Biology
10th Grade
04/25/2012

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Term
enzyme
Definition
is an organic catalyst that controls the rate of chemical reactions within cells.
Term
What kind of organic compounds are enzymes?
Definition
proteins
Term
substrates
Definition
reactants of enzymes
Term
What is the active site?
Definition
THIS IS WHERE THE SUBSTRATE BINDS TO THE ENZYME.
Term
How do enzymes speed up the rate of the reaction?
Definition
reduce the amount of energy that reactants need to react.
Term
What are the two factors that regulate enzymes?
Definition
pH and temperature
Term
What is the optimum temperature for humans?
Definition
37 degrees Celsius
Term
At what temperature are enzymes destroyed?
Definition
above 45 - 50 degrees Celsius
Term
What is the optimum pH for humans
Definition
close to 7
Term
To maintain pH at the appropriate levels, organisms contain substances known as _____________.
Definition
buffers.
Term
What is the pH of the stomach?
Definition
1 - 2
Term
What is the pH of the small intestines?
Definition
9 - 10
Term
What does alkaline pH mean?
Definition
slightly basic 8
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