Okay, so these 3 questions (which I will paraphrase to avoid copyright infringement) are really bugging me. 1. One of them discussed the conversion of a benzylic acetal to a benzylic ether and asked what the resulting IR absorbances would be. Clearly, the ether absorbance (1100 or so) was one of the answers. Another choice included the ether absorbance and an absorbance around 1700. Would we expect a C=O absorbance in this conversion? 2. There was a question asking which type of vaccine would be most likely to lead to unwanted immunities. I believe the choices were DNA vaccine, RNA vaccine, protein, or recombinant virus. 3. The last question on the p53/adenovirus passage asked what information would enable us to conclude that adenovirus would be useful in treating cancer. I remember three of the choices: a. adenovirus can productively infect some cells b. most cancers have p53 mutations (or something to that effect) c. adenovirus can infect cells that express p53. My test form was EM if that helps anyone.