This isn't necessarily a stupid question. One time, on a chem problem set, we had to draw the structure of a DNA molecule. As everyone knows, adenine and thymine each have two H-bonds and guanine and cytosine have 3 (hence why a strand of GCs is more stable than a strand of ATs). Very basic biology.
On the answer sheet, the TAs drew each of them as having three hydrogen bonds. It was embarassing, but I emailed the professor and told him that it was incorrect and provided a sourse.
That said, I would never go it unless it directly contradicted something I knew to be true.