Jump to content


Science people- will this 3 degree difference ruin my son's biology experiment?

Recommended Posts

For Biology, my son is cultivating pond water bacteria.  It's not supposed to go below 60 degrees F.  


Unfortunatley, we really really don't have a good place for it inside our home - we have no garage, and every space downstairs is dedicated to either food or very near food prep, and then there's the living room which is laminate flooring.


So, I think we can keep the jars cultivating outside.  The night time low this time of year is about 56 degrees.  Will that four degrees really kill our bacteria? If so I guess we will have to bring them in 


PS- the daytime high here is about 90 degrees F...so the bacteria and the water will likely stay above 60 throughout the night, I think.



Edited by Calming Tea
Link to comment
Share on other sites

In general, bacteria don't die when they get to refridgerator temperatures - in research labs, petri plates are stored in the fridge between experiments. The bacteria will grow much more slowly if they get cool, though. In general, most 'normal' bacteria will grow fine between normal room temp and human body temp. If you get them hot enough you can kill them, and if you freeze them without using proper storage solutions they'll get holes poked in them from the ice crystals and a lot of them will die, but anything in between usually just affects the rate of growth. Depending on what you're doing, some strains could do better than others, but it shouldn't kill everything.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...