I know that on English.SE any such question is closed as "General Reference".
This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information.
This does happen fairly often and the consensus seems to be that a link to the resource in question is posted as a comment on the question. I assume it would be possible to ask to have a similar close reason added to Biology.SE, however so far I am inclined to say that such a move is not necessary.
When I look at the question that I believe you are referring to ("How does the microbial environment in your gut initiate"), Kevin's answer links to research papers that I would argue would be of interest to experts even if the original question phrasing would not.
The approach that Kevin took would seem to be an alternative implementation of the discussion on can we avoid counterproductive disciplinary fragmentation (where the generally accepted strategy was to improve the biology in poor questions rather than simply not tolerating them at all). In providing a high level answer to an admittedly easily self answered question, we have avoided the scenario of alienating users that concerns were raised about in the above meta question.
However, I think your and the communities concerns about attractiveness to experts are also extremely valid, therefore perhaps we should be using voting to greater effect?
The full SE description of the voting arrows as everyone knows is
- UP This question shows research effort, it is useful and clear
- DOWN This question does not show any research effort, it is unclear or not useful
So, all considered I personally would be inclined to:
- Reward the effort of answers that have gone beyond just what was necessary to answer the question in order to maintain the appeal of the site to experts by strong up-voting
- Penalise questions where the asker has not put in sufficient research effort (i.e. bare minimum Googling!) in the intended way by down-voting.
I am a strong believer that, especially at this early stage, questions that can be salvaged and improved by the community should be =)