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Enzymes
Test Description: Enzymes
Instructions: Answer all questions to get your test result.
1) An enzyme is typically
A
a protein
B
a lipid
C
a carbohydrate
D
a nucleic acid
2) The function of an enzyme is to
A
to digest food
B
to be a chemical catalyst
C
to slow down chemical reactions
D
to destroy damaged cells
3) A chemical catalyst
A
creates chemical reactions
B
speeds up chemical reactions
C
stops chemical reactions
D
slows down chemical reactions
4) Activation energy is
A
the energy needed to stop a chemical reaction
B
active
C
passive
D
the energy needed to start a chemical reaction
5) Which of the following is not a function of enzymes
A
break down during a chemical reaction
B
Bring substrate molecules closer together
C
Lower activation energy
D
Put stress on the bonds of substrates
6) A substrate is
A
A molecule that functions as an enzyme
B
A molecule that an enzyme acts on
C
a chemical catalyst
D
A molecule
7) This gives an enzyme its function
A
The hydrophobic and hydrophilic regions
B
The combination of monosaccharides
C
The shape of the molecule caused by the sequence of amino acids
D
The combination of nucleotides
8) This is the area where the enzyme interacts with the substrate
A
Active site
B
Allosteric site
C
Whole molecule
9) If the shape of the active site changes, what will happen?
A
The substrate will no longer bind
B
The enzyme will stop functioning
C
The enzyme will interact with another substrate
D
Nothing
10) What factors do not cause a change in shape of the active site?
A
pH
B
substrate binding
C
water
D
temperature
11) What is the induced fit?
A
bonding of substrate the active site causing a shift in the shape of the active site
B
forcing the substrate to bind to the active site
C
when a molecule binds in the allosteric site
D
when another substrate binds to the enzyme
12) What is enzyme specificity?
A
When an enzyme can partially create a chemical reaction on any substrate
B
When an enzyme will only interact with a specific substrate.
C
When an enzyme can interact with multiple substrates
13) When an inhibitor binds in the active site blocking the substrate from binding
A
Noncompetitive inhibition
B
competitive inhibition
14) When an inhibitor binds in the allosteric site changing the shape of the active site
A
Noncompetitive inhibition
B
Competitive inhibition
*select an answer for all questions
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