Subject: Do salt make yeast grow?

I've conducted a simple experiment on what is the best conditions for 
yeast to grow.  My results were not as expected.  I had one bottle with 3 
tablespoons of sugar, 50 degrees C water(warm water), and 1 teaspoon of 
yeast.  One bottle with 1 tablespoon of sugar, warm water, and 1 teaspoon 
of yeast, and one bottle with 3 tablespoon of sugar, warm water, 1 
tablespoon of salt, and 1 teaspoon of yeast.  The bottle that produced the 
most carbon dioxide was the last one.  I thought the first bottle would 
produce the most carbon dioxide.  Why?

Re: Do salt make yeast grow?