4. Which amino acids are negatively-charged at neutral pH? (A)A, C, (B) D, E, (C) L, I, (D) K, R, (E) N, Q.

4. Which amino acids are negatively-charged at neutral pH?
(A)A, C,
(B) D, E,
(C) L, I,
(D) K, R,
(E) N, Q.

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統計： A(0), B(1), C(0), D(0), E(0) #3195217

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7. HMG-CoA reductase is the key regulatory site in cholesterol synthesis. Which of the following statement about the regulatory mechanisms of HMG-CoA reductase is TRUE? (A) Phosphorylation by cAMP-dependent kinase activates HMG-CoA reductase, (B) A high AMP:ATP ratio leads to activation of HMG-CoA reductase, (C) High cholesterol level increases the half-life of HMG-CoA reductase, (D) High cholesterol level increases HMG-CoA reductase gene expression, (E) HMG-CoA reductase phosphatase can activate HMG-CoA reductase.

4. Which amino acids are negatively-charged at neutral pH?
(A)A, C,
(B) D, E,
(C) L, I,
(D) K, R,
(E) N, Q.

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