5E: Thermodynamics & Kinetics · Flashcards

Question

What does $K_{e q} = 1$ imply about $Δ G^{\circ}$ and equilibrium favorability?

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Answer

$Δ G^{\circ} = 0$ ; neither side is favored.

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Question

If $K_{e q} = 100$ at $298$ K, what is the sign of $Δ G^{\circ}$ ?

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Answer

Negative; because $ln K_{e q}$ is positive when $K_{e q} > 1$ .

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Question

On a Lineweaver-Burk plot, what pattern suggests pure noncompetitive inhibition?

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Answer

$y$ -intercept increases, $x$ -intercept stays the same, slope increases.

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Question

What is an apoenzyme, and what MCAT clue should you remember?

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Answer

An enzyme without its required cofactor; inactive form.

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