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Am I Ready: Enzymes And Chemical Reactions
Test Description: Enzymes and Reactions
Instructions: Answer all questions to get your test result.
1) The enzyme and substrates shape are
A
symmetrical
B
noncompliant
C
competative
D
complimentary
2) Energy needed to start chemical reactions is called
A
catalyst
B
endergonic
C
conformation
D
activation energy
3) Enzymes________________ allowing reactions to occur quicker
A
increase the activation energy
B
increase the temperature
C
lower the activation energy
D
do not change the activation energy or temperature
4) A well tested explanation of natural events
A
law
B
observation
C
theory
D
hypothesis
5) A chemical reaction that releases energy is called
A
endergonic reaction
B
displacement
C
exergonic reaction
D
catalyst
6) A reaction where energy is stored is called
A
displacement
B
catalyst
C
endergonic reaction
D
exergonic reaction
7) Enzymes are biological _____________ that speed up the rates of reactions without being consumed in the process
A
substrates
B
active sites
C
catalysts
D
products
8) The part of the enzyme that fits with the substrate
A
competitive inhibitor
B
noncompetitive inhibitor
C
active site
D
catalyst
9) When an enzyme is denatured, ______________changes shape
A
active site
B
substrate
C
noncompetitive inhibitor
D
competitive inhibitor
10) Reactions without enzymes occur ___________ than reactions with enzymes
A
faster with less energy and a higher temp
B
slower with less energy and a lower temp
C
slower with more energy and a higher temp
D
faster with more energy and an lower temp
11) Enzymes and substrates are complimentary in ________
A
temperature
B
catalysts
C
energy
D
shape
12) Describe the complimentary relationship of an enzyme and substrate
A
enzyme fits loosely with the substrate
B
enzyme fits tightly with the substrate
C
the enzyme and substrate do not fit
13) Which enzyme model says enzymes and substrates are complimentary in shape, and the enzyme perfectly fits the substrate to break it apart
A
induced fit
B
germ theory
C
cell theory
D
lock and key
14) Which enzyme model says the enzyme and substrate are complimentary but the enzyme squeezed the substrate to break it down?
A
induced fit
B
lock and key
C
germ theory
D
cell theory
15) Enzymes are denatured by
A
changing the solution
B
all of the above
C
changing the pH
D
changing the temperature
16) This statement is an example of: If I study then my grade will get a good grade on my test
A
Law
B
Hypothesis
C
Theory
17) A solution with a pH lower than 7 is called
A
base/alkaline
B
neutral
C
acid
18) A solution with a pH above 7 is called
A
base/alkaline
B
acid
C
neutral
19) Which inhibitor blocks the substrate from joining with the enzyme
A
catalyst
B
competitive inhibitor
C
denature
D
noncompetitive inhibior
20) Which inhibitor changes the shape of the enzyme active site preventing it from joining with the substrate?
A
noncompetitive inhibitor
B
catalyst
C
competitive inhibitor
D
denature
*select an answer for all questions
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