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Bio lab 4 self asses

QuestionAnswer
When hydrogen peroxide was added to liver that has been boiled (100 degrees C), why was there no reaction? The enzyme is a protein and it denatures when boiled
Why did the enzyme work more efficiently at warmer temperatures than colder temperatures? Warmer conditions speed up chemical reactions
Which substance had more enzymes? Liver
When hydrogen peroxide and catalase come together, what gas is released (the bubbles!)? Oxygen
Catalase is re-usable by cells. True or False? True
Our cells use _____ to break down poisonous chemicals Enzymes
Enzymes are ____ that ____ up the rate of reactions Proteins; Speed
An enzymes ______ is to determine by its structrue Function
When an enzyme loses its 3 dimensional structure, it has been _____ and no longer functions ______ Denatured; Properly
Changes in _____, pH and _______ concentration can denature and enzyme Temperature; Solute
Enzymes are ______, so they can be used over and over again Recycled
_______ is an enzyme that speeds up a reaction that breaks down hydrogen peroxide, a toxic chemical, into 2 harmless substances- ______ and oxygen Catalase; Water
Hydrogen peroxide is produced as a byproduct of many normal cellular reactions and if not broken down, could cause a cell to _____ Die
A reaction that absorbs heat is _____ Endothermic
A reaction that gives off heat is ____ Exothermic
When fresh liver is put in hydrogen peroxide, it _____ quickly caused by _____ being released Bubbled; Oxygen
When fresh liver was added to USED hydrogen peroxide, there were ____ bubbles because the hydrogen peroxide had been. _____ down by the first piece of liver Few; Broken
The old hydrogen peroxide was now compared of ______ and ______ Water; Oxygen
When the USED liver was put in new hydrogen peroxide, there were still bubbles, because the _______ in the liver is ______ Catalase; Reusable
Liver has ____ catalase than a Potato, shown by more ______ and a faster rate of bubbling More; Bubbles
When the liver was boiled, it becomes ______ and there were no _____ Denatured; Bubbles
There were more bubbles when the liver was put in ______ water than cold water, showing that warm temperature is the optimum temperature for ______ Warm; Catalase
As temperature ______, enzyme activity _____ Rises; Increases
Created by: scarangelo
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