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Enzymes
Test Description: Enzymes questions
Instructions: Answer all questions to get your test result.
1) Why are enzymes specific?
A
They only bind to certain substrates
B
They only work at one pH
C
Are lipids with special functions
D
They only work at one temperature
2) All enzymes are
A
Carbohydrates
B
Nucleic acids
C
Proteins
D
Lipids
3) The name of the compound that binds to an enzyme
A
Substrate
B
Product
C
Chemical
D
Protein
4) Activation energy is the
A
The area where a substrate binds to the enzyme.
B
The energy of the enzyme-substrate complex.
C
Energy needed to get a chemical reaction started.
D
Energy needed to end a chemical reaction.
5) Enzymes and catalysts speed up the rate of chemical reactions by:
A
Decreasing the activation energy.
B
Decreasing the heat produced.
C
Increasing the activation energy.
D
Increasing the heat produced.
6) Individuals who lack lactase are unable to break down the sugar lactose. Which term best describes lactase
A
Lipid
B
Fat
C
Carbohydrate
D
Enzyme
7) What best describes an acid?
A
a pH = 7
B
a pH below 7
C
a pH above 7
D
none of these
8) What best describes a base?
A
a pH = 7
B
none of these
C
a pH above 7
D
a pH below 7
9) Why are enzymes reusable?
A
They are renewed by other enzymes.
B
Enzymes are not changed when they catalyze a chemical reaction.
C
Enzymes are constantly regenerated by respiration
D
Enzymes are made of strong materials
10) Proteins are made of
A
Fatty Acids
B
Amino acids
C
Monosaccharides
D
Nucleotides
*select an answer for all questions
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