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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 are not affected by temperature
B
enzymes are proteins
C
enzymes work best at a specified pH
D
enzymes are biological catalyst
4) Enzymes affect the reactions in living cells by lowering the
A
speed of the reaction
B
activation energy of the reaction
C
active site energy of the reaction
D
temperature of the reaction
5) What determines the function of a protein?
A
shape
B
substrate
C
pH
D
size
6) Substances that result from a chemical reaction.
A
reactants
B
producers
C
products
D
reactors
7) denatures a protein by adding heating
A
pH
B
pressure
C
temperature
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
c
D
a
10) What is produced when hydrogen peroxide and catalase meet?
A
carbon dioxide and liver
B
water and oxygen
C
water and carbon dioxide
D
liver and water
*select an answer for all questions
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