Which of the following statements is true? A.)The and angles about the -C of ami

Question

Which of the following statements is true?

A.)The and angles about the -C of amino acids in a polypeptide determine the path of the polypeptide because all combinations of and angles are allowable.

B)If the pH of a diabetic’s blood is 6.9, the [H+] is less than 10-7.4M

C) In the formation of the ES complex, the water becomes highly ordered about the substrate thus the Second Law of Thermodynamics is violated.

D).The Hydrogen bond is about 10 % covalent in nature due to the overlaps in the bond orbitals, and about 90% electrostatic.

E)The Second Law of Thermodynamics states that the entropy of the universe decreases in all spontaneous processes.

Explanation / Answer

Statement A is incorrect because not all combinations of these angles are allowable.

Statement B is incorrect. [H+] is 10-pH . [H+] will be more than 10-7.4

Statement D is correct. Hydrogen bond is 90% electrostatic and 10% covalent in nature.

Statement E is incorrect because second law of Thermodynamics states that entropy increases over time for spontaneous processes and is never negative .

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