N-Methylacetamide is an example of ________.

A) a primary amide
B) a secondary amide
C) a tertiary amide
D) an N, N-disubstituted amide
E) an imine

Which of the following reagents are commonly used to acylate the amino group of an amino acid?

A) both acetic anhydride and benzyl chloroformate
B) both benzyl chloroformate and α-bromoacetic acid
C) both α-bromoacetic acid and tosyl chloride
D) both tosyl chloride and acetic anhydride
E) both benzyl chloroformate and tosyl chloride

What do linoleic acid and stearic acid have in common that oleic acids does not?

A) The first two are both straight-chain fatty acids.
B) The first two are both fatty acids containing at least one double bond.
C) They are both fatty acids, while oleic acid is actually a wax, despite its name.
D) None of the above.