The Ends of DNA Molecules Cut by Restriction Enzymes Are

Multiple Choice

The ends of DNA molecules cut by restriction enzymes are "sticky" because

A) the enzymes coat them with protective, complex polysaccharides.
B) unless a second enzyme is added, the fragments stick to the restriction enzymes.
C) they are single-stranded.
D) the enzymes cut each strand of the DNA at different places.
E) they are single-stranded and the enzymes cut each strand of the DNA at different places.