Quiz 5* |
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1-6. Use these terms: (C) kcat; (E) [Et]; (H) kcat/KM ; (K) KM ; (S) [S]; (V) v0 ; (X) Vmax .
Use each answer only once.
the turnover number |
= [S] when v0 = 0.5 Vmax |
x axis for a Michaelis-Menton graph |
the specificity constant |
= [ES] in the steady state approximation |
has units of M s-1 |
7-9. Use these terms: (A) α; (B) α′; (C) competitive inhibitor; (M) mixed inhibitor;
(U) uncompetitive inhibitor. Use each answer only once .
binds both E and ES |
resembles the substrate |
modifies [S] in the Michaelis-Menton equation for a mixed inhibitor |
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10. Fill in the blank with the appropriate term: = [E] [I] / [E I].
1-6. Use these terms: (C) kcat; (E) [Et]; (H) kcat/KM ; (K) KM ; (S) [S]; (V) v0 ; (X) Vmax .
Use each answer only once.
an overall rate constant |
the rate when the enzyme is saturated |
has units of s-1 |
y axis for a Michaelis-Menton graph |
has units of M |
= 107 – 1010 for extremely efficient enzymes |
7-9. Use these terms: (A) α ; (B) α′; (C) competitive inhibitor; (M) mixed inhibitor;
(U) uncompetitive inhibitor. Use each answer only once .
= 1 + [I]/KI′ |
binds E but not ES |
binds the enzyme, but not in the active site |
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10. Fill in the blanks with the appropriate terms: KI′ = / .
1-6. Use these terms: (C) kcat; (E) [Et]; (H) kcat/KM ; (K) KM ; (S) [S]; (V) v0 ; (X) Vmax .
Use each answer only once.
= [S] when v0 = 0.5 Vmax |
the denominator for kcat |
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the turnover number |
the rate of the reaction in the first minute |
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has units of M-1 s-1 |
in the numerator of the Michaelis-Menton equation |
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7-9. Use these terms: (A) α; (B) α′; (C) competitive inhibitor; (M) mixed inhibitor;
(U) uncompetitive inhibitor. Use each answer only once .
binds in the active site |
modifies KM in the Michaelis-Menton |
causes Vmax to decrease, which changes KM |
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10. Fill in the blank with the appropriate term(s): KI′ = / [ESI].
1-6. Use these terms: (C) kcat; (E) [Et]; (H) kcat/KM ; (K) KM ; (S) [S]; (V) v0 ; (X) Vmax .
Use each answer only once.
the numerator for kcat |
the rate of the reaction in the first minute |
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has units of s-1 |
often indicates an enzyme's affinity for substrate |
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shows enzyme efficiency at |
in the denominator of the Michaelis-Menton |
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7-9. Use these terms: (A) α; (B) α′; (C) competitive inhibitor; (M) mixed inhibitor;
(U) uncompetitive inhibitor. Use each answer only once .
= 1 + [I]/KI |
binds ES but not E |
causes KM to increase, but Vmax is unchanged |
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10. Fill in the blanks with the appropriate terms: KI = / .
*For complicated reasons that don't change the quiz value, I only printed half of these quizzes.