i) How many peptide bonds are in a hexapeptide?
ii) Write the general structure of the Zwiter ionic form of an `alpha-` amino acid.
iii) Deficiency of which vitamin cause pernicious anemia?

Explanation

b i) The `-CO-NH-` bond formed b/w the `alpha` amino acids is called peptide bond (or) peptide linkage
Hence hexapeptide contains five (5) peptide linkages
ii) General structure for the zwilter Ionic from of an `alpha` amino acids is
`R-overset(NH_(3)^(+))underset("|  ")underset("H ")underset("|  ")"C "-COO^(-)`
iii) Deficiency of vitamin `B_(12)` cause pernicious anemia.