Refer to the figure below 1 The molecules in the figure are

Refer to the figure below.

1) The molecules in the figure are joined in polymeric chains with other amino acids by _______ bonds.

a) hydrogen

b) ionic

c) glycosidic

d) peptide

e) disulfide

2)The molecules in the figure are

a.structural isomers.

b.optical isomers.

c.hydrophobic.

d.hydrophilic.

e.Both b and d

1) The molecules in the figure are joined in polymeric chains with other amino acids by _______ bonds. a) hydrogen b) ionic c) glycosidic d) peptide e) disulfide 2)The molecules in the figure are a.structural isomers. b.optical isomers. c.hydrophobic. d.hydrophilic. e.Both b and d

HaN C COO CH2OH L-Serine COO HaN CH2OH D-Serine

Solution

Proteins are nothing but the polymer of amino acid in which amino acid is linked to each other by peptide bonds i.e. CO - NH linkage. Hence most perfect answer of your question 1st is peptide bonds i.e. option d

Second question answer is e because D and L serine are enantiomers as well as hydrophilic in nature.

They rotate plane polarised light in different location hence called as optical isomer.