Science Questions

Do bacteria sleep or have a pattern to their activity?

Sun, 6th Jul 2008

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Question

Bruce Rogers asked:

Do bacteria sleep or have a pattern to their activity?

Answer

We put this question to Dr Harriet McWatters:

Ordinary bacteria such as you would find in your gut probably not.  There is a class of blue-green algae which are often called cyanobacteria which have very strong circadian rhythms.

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therodgers21 asked the Naked Scientists: Hi, Iím a new fan of your show. I live in Silicon Valley (it sounds far more noble than Milpitas, no?). I find your show to be the best way to demystify science. You offer a simple enough introduction to make the subjectís specifics understandable. Listening to a bright lady with a sexy voice doesnít hurt either. My question: do all living things require rest? Case in point: do bacteria sleep or have a pattern to their activity? Thanks, Bruce Rodgers --------------------------------- What do you think? therodgers21 , Wed, 4th Jun 2008

Photosynthetic bacteria are governed by sunlight exposure, so would behave differently in the day and in the night. 
http://en.wikipedia.org/wiki/Purple_bacteria RD, Mon, 9th Jun 2008

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