Answer:
a) Most likely an amphipathic α helix: Asn−Leu−Ala−Asp−Ser−Phe−Arg−Gln−Ile
b) Most likely an amphipathic β sheet: Gln−Ile−Thr−Phe−Thr−leu−Gln−Val−Ser
c) Most likely a turn/loop: Lys−Gln−Asn−Glu−Pro−Arg−Ala−Asn−Glu
d) Not amphipathic: Lys−Ser−Thr−Asn−Glu−Gln−Asn−Ser−Arg
Step-by-step explanation:
Amino acids, methionine, alanine, leucine, glutamate, and lysine are made of an alpha helix. The amino acids tryptophan, tyrosine, phenylalanine, and beta such as leucine, threonine, and valine form a beta structure. The remaining amino acids would tend to form a non-amphipathic chain.