Draw the complete structure of the following tetrapeptides (draw the ionized groups in the protonated form): 1) Met- Glu-Gly-His; 2) Phe-Asp-Phe-Thr.

See attached picture.

Explanation:

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In this case, given that each amino acid is bonded via the peptidic bond (CONH) for each tetrapeptide we obtain the structures on the attached picture. Take into account that each tetrapeptide has an initial amino side and a ending carboxylic side.

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explanation:

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metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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