Am I Ready: Enzymes And Chemical Reactions Question Preview (ID: 23181)
Enzymes And Reactions.
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The enzyme and substrates shape are
a) complimentary
b) competative
c) symmetrical
d) noncompliant
Energy needed to start chemical reactions is called
a) conformation
b) catalyst
c) endergonic
d) activation energy
Enzymes________________ allowing reactions to occur quicker
a) lower the activation energy
b) increase the activation energy
c) increase the temperature
d) do not change the activation energy or temperature
A well tested explanation of natural events
a) hypothesis
b) theory
c) law
d) observation
A chemical reaction that releases energy is called
a) endergonic reaction
b) exergonic reaction
c) catalyst
d) displacement
A reaction where energy is stored is called
a) endergonic reaction
b) exergonic reaction
c) catalyst
d) displacement
Enzymes are biological _____________ that speed up the rates of reactions without being consumed in the process
a) substrates
b) active sites
c) products
d) catalysts
The part of the enzyme that fits with the substrate
a) active site
b) catalyst
c) competitive inhibitor
d) noncompetitive inhibitor
When an enzyme is denatured, ______________changes shape
a) active site
b) competitive inhibitor
c) noncompetitive inhibitor
d) substrate
Reactions without enzymes occur ___________ than reactions with enzymes
a) slower with more energy and a higher temp
b) faster with less energy and a higher temp
c) slower with less energy and a lower temp
d) faster with more energy and an lower temp
Enzymes and substrates are complimentary in ________
a) energy
b) temperature
c) shape
d) catalysts
Describe the complimentary relationship of an enzyme and substrate
a) enzyme fits tightly with the substrate
b) enzyme fits loosely with the substrate
c) the enzyme and substrate do not fit
d)
Which enzyme model says enzymes and substrates are complimentary in shape, and the enzyme perfectly fits the substrate to break it apart
a) lock and key
b) induced fit
c) cell theory
d) germ theory
Which enzyme model says the enzyme and substrate are complimentary but the enzyme squeezed the substrate to break it down?
a) lock and key
b) induced fit
c) cell theory
d) germ theory
Enzymes are denatured by
a) changing the temperature
b) changing the pH
c) changing the solution
d) all of the above
This statement is an example of: If I study then my grade will get a good grade on my test
a) Law
b) Theory
c) Hypothesis
d)
A solution with a pH lower than 7 is called
a) acid
b) base/alkaline
c) neutral
d)
A solution with a pH above 7 is called
a) acid
b) base/alkaline
c) neutral
d)
Which inhibitor blocks the substrate from joining with the enzyme
a) competitive inhibitor
b) noncompetitive inhibior
c) catalyst
d) denature
Which inhibitor changes the shape of the enzyme active site preventing it from joining with the substrate?
a) competitive inhibitor
b) noncompetitive inhibitor
c) catalyst
d) denature
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