) Each of the following is a noncovalent interaction EXCEPT: A) a hydrogen bond. B) a carbon-hydrogen bond. C) the interaction between an amino and a carboxylate group. D) a van der Waals interaction. E) an interaction between —NH3+ and a water molecule.

Each of the following is a noncovalent interaction except a carbon-hydrogen bond. The correct option is B.

Explanation:

Non covalent interaction: is the sharing of electron as weak bonds between hydrogen and other atom. Non covalent interaction have large roles in the maintenance of structures of biomolecules as proteins. In biological processes many times a transient bonds are formed between molecules for various functions. The interaction between atoms of the same molecule termed as intermolecular bonds are also non-covalent interactions.

Non- covalent bonds are present in the helix formation.

The non covalent interactions are hydrogen bonds, Van Der Waals forces dipole -dipole bonds and hydrobhic interactions.

The bonds formed in C-H is non-polar and thus are not involved in hydrogen bond hence non covalent interaction.