user10456: This question was closed for being unresearched homework. 
I am not sure why this is the case. According to the Biology FAQ:

What should I do before I ask the question?
Research it yourself - even if you try and can't find the answer or understand the concept you need you can then include what you have
  found out yourself in the question.
  Search the site to see if something similar has been asked before.
How should I ask my question?
Include details of how you have attempted to form a solution. We will not do your homework assignments for you but we will point you in
  the right direction if you have made the effort to research the topic
  first.

It seems that the poster did do his/her research, and arrived at a strange result - the concentration decreasing (probably due to a miscommunication), but the poster did in fact do their research, and arrived at the correct result too. While I think this question could probably be closed on other grounds (too specific an event), it doesn't appear to be poorly researched.
I would therefore like to understand the rationale of others on closing this question for "insufficient research". 

user12909: In regards to the more general question what is consider enough research. This isn't something we can measure objectively and prescribe a template to the users with close voting privileges. What one person says is lack of effort another may say they have done a bit. This a subjective judgement call made, hopefully in good faith, by each user with the privilege to cast close votes. However, we don't have to let this be an unfortunate circumstance of human nature. On Math.SE, we have a thread in meta dedicated to posts that were closed. Most people are not going to monitor every close post they voted to close. This would take away contributors ability to answer other questions if they did monitor all the questions they voted on. 
I propose we borrow from Math.SE and start and start a yearly Requests for Reopen & Undeletion thread. The link will take you to the current version we are using on math as an example. We do this so there aren't 100s of different meta posts on why is thread closed or delete or on hold, etc. We can compile them all in a central location. This is allows for edited post, that now fit in, which may have dropped by the way side to garner attention of voters for reopen or some other vote.
Here is a screenshot of what can occur:
 
Someone requested that the post be undeleted. Once it was undeleted either the OP or another user edited the post and added

Undelete

However, this post was some how provocative in nature and people voted to redelete so it wen through a cycle of deleting and undeleting and eventually locking. This isn't always the case but it shows that how we kept a single post from eating up multiple meta threads.
With a parent thread, the mods then can migrate new meta questions to the bigger thread keeping meta clean. As the site grows, questions like this will become more prevalent. If we start now, we will be ahead of the curve and not trying to implement something later in the game.

10456: <p><a href="https://biology.stackexchange.com/questions/30250/adding-0-5-micromolar-of-solution-to-cell-cuture">This question</a> was closed for being unresearched homework. </p>

<p>I am not sure why this is the case. According to the Biology FAQ:</p>

<blockquote>
  <p>What should I do before I ask the question?</p>
  
  <p>Research it yourself - even if you try and can't find the answer or understand the concept you need you can then include what you have
  found out yourself in the question.
  Search the site to see if something similar has been asked before.</p>
  
  <p>How should I ask my question?</p>
  
  <p>Include details of how you have attempted to form a solution. We will not do your homework assignments for you but we will point you in
  the right direction if you have made the effort to research the topic
  first.</p>
</blockquote>

<p>It seems that the poster did do his/her research, and arrived at a strange result - the concentration decreasing (probably due to a miscommunication), but the poster did in fact do their research, and arrived at the correct result too. While I think this question could probably be closed on other grounds (too specific an event), it doesn't appear to be poorly researched.</p>

<p>I would therefore like to understand the rationale of others on closing this question for "insufficient research". </p>
 12909: <p>In regards to the more general question what is consider enough research. This isn't something we can measure objectively and prescribe a template to the users with close voting privileges. What one person says is lack of effort another may say they have done a bit. This a subjective judgement call made, hopefully in good faith, by each user with the privilege to cast close votes. However, we don't have to let this be an unfortunate circumstance of human nature. On Math.SE, we have a thread in meta dedicated to posts that were closed. Most people are not going to monitor every close post they voted to close. This would take away contributors ability to answer other questions if they did monitor all the questions they voted on. </p>

<p>I propose we borrow from Math.SE and start and start a yearly <a href="https://math.meta.stackexchange.com/questions/19042/requests-for-reopen-undeletion-votes-etc-volume-01-2015-current-versio">Requests for Reopen &amp; Undeletion</a> thread. The link will take you to the current version we are using on math as an example. We do this so there aren't 100s of different meta posts on why is thread closed or delete or on hold, etc. We can compile them all in a central location. This is allows for edited post, that now fit in, which may have dropped by the way side to garner attention of voters for reopen or some other vote.</p>

<p>Here is a screenshot of what can occur:</p>

<p><img src="https://i.stack.imgur.com/SvIzb.png" alt="enter image description here"> </p>

<p>Someone requested that the post be undeleted. Once it was undeleted either the OP or another user edited the post and added</p>

<blockquote>
  <p><strong>Undelete</strong></p>
</blockquote>

<p>However, this post was some how provocative in nature and people voted to redelete so it wen through a cycle of deleting and undeleting and eventually locking. This isn't always the case but it shows that how we kept a single post from eating up multiple meta threads.</p>

<p>With a parent thread, the mods then can migrate new meta questions to the bigger thread keeping meta clean. As the site grows, questions like this will become more prevalent. If we start now, we will be ahead of the curve and not trying to implement something later in the game.</p>
