This is in response to Tom A Brown who was asking about the various
types of yeast and their behavior.
The only thing I know is that Brewer's Yeast, as found in the United
States, is sold as a nutritional supplement, and cannot be used to make
bread rise. I don't think you can brew anything with it, either. You
need active yeast for that.
For the answer to all your other questions about yeast, if you are
really serious, check out this website:
http://genome-www.stanford.edu/Saccharomyces/VL-yeast.html
Trust me, this site has more than you could ever want to know about
yeast!
Keep Baking Bread!
Christ is Risen Indeed! \o/
Ruth Provance