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Enzymes III
Test Description: Enymes III
Instructions: Answer all questions to get your test result.
1) What is the term used to describe the energy needed to get a reaction started?
A
incorrect
B
correct
2) A substance that accelerates the rate of a chemical reaction is called?
A
incorrect
B
correct
3) Which of the following statements about enzymes is NOT true?
A
enzymes work best at a specified pH
B
enzymes are proteins
C
enzymes are biological catalyst
D
enzymes are not affected by temperature
4) Enzymes affect the reactions in living cells by lowering the
A
active site energy of the reaction
B
temperature of the reaction
C
activation energy of the reaction
D
speed of the reaction
5) What determines the function of a protein?
A
size
B
substrate
C
pH
D
shape
6) Substances that result from a chemical reaction.
A
producers
B
products
C
reactors
D
reactants
7) denatures a protein by adding heating
A
temperature
B
pH
C
pressure
D
wax
8) What part of the reaction is the reactants?
A
a
B
b
C
c
9) What part of the reaction is the activation energy?
A
d
B
b
C
a
D
c
10) What is produced when hydrogen peroxide and catalase meet?
A
water and oxygen
B
carbon dioxide and liver
C
water and carbon dioxide
D
liver and water
*select an answer for all questions
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