Lab 5: How Enzymes Function Flashcards
What symbol represents the change that occurs in a chemical reaction?
an arrow, —–>
Are the substrates in an enzymatic reaction reactant or products?
reactants
What is the name of the location on an enzyme where its substrate or substrates bind?
active site
What cellular organelle contains catalase and is present in all plant and animal organs?
peroxisome
What did measuring the bubble column heights in all the experimental procedures indicate?
a reaction
What purpose did the tube containing water and hydrogen peroxide serve in the catalase activity experimental procedure?
negative control
What word describes the loss of an enzyme’s original shape and ability of its active site to function?
denatures
What happens to enzyme activity if the temperature increases tightly?
increases
What did the negative control tube lack when the effect of enzyme concentration was studied?
a catalase
If cells produce more catalase, will there be more or less water and oxygen produced from the breakdown of hydrogen peroxide by catalase?
more
What word describes the pH at which the speed of a reaction involving an enzyme occurs best?
optimal
What does a shift in pH (too high or too low) do to an enzyme that will influence its acitivity?
reduce activity
In the Experimental Procedure on the effect of pH on enzyme activity, which tube contained water with an acidic pH?
tube 1
Since enzymes are specific for certain substrates and often have similar names, what is the name of the enzyme used in tube 3 of the catalase activity experiment that facilitates the breakdown of sucrose?
sucrase
What occurs during a degradation reaction?
the substrate is broken down to the products
