Subject: do yeast respire when they are placed in water without any sugar

Dear Sir/Madam, 
              Good day to you. I would like to know if yeast do respire and give 
out out carbon dioxide when it is placed in a beaker of plain water without any 
sugar in it. I have searched many websites but they mention that yeast only 
respire and give out carbon dioxide when it is placed in sugar solution. I 
thought that so long as the yeast is alive, it should be able to respire and 
give out carbon dioxide even if it is placed in plain water because living 
things respire all the time. What is actually happening???
   

Re: do yeast respire when they are placed in water without any sugar