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Enzyme Quiz
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by Elizabeth Gonzalez
| 10 Questions
1
1 pt
Various enzymes in our bodies are:
Lipids
Carbohydrates
Nucleotides
Proteins
2
1 pt
Enzymes only work with specific substrates because each enzyme:
Has an active site which only fits substrates with a particular shape.
Can only make ionic bonds.
Cannot change shape.
Becomes denatured when it is heated.
3
1 pt
Structural changes in an enzyme can affect its ability to function correctly. This denaturation can occur as a result of _______________.
Extreme temperature change
Change in pH
Addition of substrates
Both A and B are correct
4
1 pt
Enzymes with an optimal pH of 3 would most likely be found in the ___________.
Salivary gland
Stomach
Large intestine
Small intestine
Use the following graph to answer #19 below:
5
1 pt
What is the optimal temperature for this enzyme?
20℃
32℃
45℃
60℃
6
3 pts
Label the parts of this diagram showing the catalyzed reaction breaking down hydrogen peroxide into water and oxygen using the terms (A) enzyme, (B) substrate, and (C) products.
7
1 pt
This type of reaction releases energy
endothermic
activation energy
exothermic
8
1 pt
This type of reaction absorbs energy
endothermic reaction
activation energy
exothermic reaction
D
Figure 8.16a
zoom in
Functionalized Placeholder
9
1 pt
At what temperature do BOTH the human enzyme and thermophilic enzyme have some function? Write the numerical value only.
10
1 pt
In the lock and key model of of enzyme function shown above, what is happening in step 2?
The enzyme is causing new bonds to form between the substrate
The substrates are beginning to bind to the enzyme
The active sites are restructuring the enzyme.
The catalyzed reaction is releasing a product.
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