database design in a survey/poll system

I plan to design a small survey/poll system similar to polldaddy<http://polldaddy.com/> . And I have some confusion in designing the database for the multiple/single choice questions. Of course, it is possible to use one table to store the question title and another table to store the choice item(one record for each choice item). My main concern is that whether we can place the choices together in the same table(and in one ) with the question title. I guess it can be faster to read from one table than reading from two table. And my idea is to use a delimiter to separate the choices. And the handling of the choices are done in the php script. But what delimiter should be used? Can anyone help? Thanks!