Question

Formation of both peptide bonds and glycosidic bonds
(A) involve addition of a phosphate group to the precursor molecules.
(B) would not require a catalyst in biological systems.
(C) involve removal of a water molecule.
(D) involve addition of carboxyl group.

Answer 1

Answer (C) involve removal of a water molecule.
peptidepeptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). This is a dehydration synthesis reaction (also known as a condensation reaction), and usually occurs between amino acids.
Glycosidic bond is a condensation reaction between two sugar units, where the H- group from one sugar interacts with the -OH group on another to release water and link the sugar units together to form a polysaccharide.