Enzyme Structure and Catalysis (5E)
MCAT · Flashcards · Application
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QUESTION
At
[
S
]
=
K
m
[S]=K_m
[
S
]
=
K
m
, what is
v
0
v_0
v
0
expressed in terms of
V
m
a
x
V_{max}
V
ma
x
?
QUESTION
If
[
S
]
≪
K
m
[S] \ll K_m
[
S
]
≪
K
m
, what is the approximate form of
v
0
v_0
v
0
?
QUESTION
If
[
S
]
≫
K
m
[S] \gg K_m
[
S
]
≫
K
m
, what is the approximate value of
v
0
v_0
v
0
?
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ANSWER
v
0
≈
V
m
a
x
v_0\approx V_{max}
v
0
≈
V
ma
x
. High substrate concentrations saturate the enzyme, making the reaction rate independent of
[
S
]
[S]
[
S
]
.
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