A small generic section of the primary structure of an alpha helix is given below

-amino acid1-amino acid2-amino acid3-amino acid4-amino acid5-amino acid-6-amino acid7-

a.) which amino acid residue's backbone forms a hydrogen bond witht he backbone of the seventh(7th) residue?

6, 1, 3, 2, 5, OR 7?

b.) which of the following peptide segments is most likely to be part of a stable alpha helix at physiological pH?

a.) -Lys-Lys-Ala-Arg-Ser-

b.) -Gly-Arg-Lys-His-Gly-

c.) -Pro-Leu-Thr-Pro-Trp-

d.) -Gly-Gly-Gly-Ala-Gly-

e.) -Glu-Glu-Glu-Glu-Glu-

f.) -Glu-Leu-Ala-Lys-Phe-

g.) -Tyr-Trp-Phe-Val-IIe-