Technically it would be " Which group of micro-organisms does yeast belong to? "
But the answer is Fungi.
yes because when you drink and eat your food some of your microorganisims can stay on the food or drink and the other person that eats or drinks it can get sick or not.(your microorganisims are good for you).
other microorganisims
They live in many things.
Louis Pasteur
yes fertilizer does have microorganisims in it
because they can protect the animals body.
Yeast does go into the bread, but before baking, when the dough is prepared. This is the yeast which allows the dough to rise before being finally baked.
no. Yeast Infections dont tend to be related to actual yeast, Well they are never the root to the infection. If you are concerned you have one go to your doctor.
Yes, yeast (even dried yeast) is a living organism and if it is not used/activated in a given time period the yeast cells will die and the yeast will not work in baking/brewing.
go to http://www.articlesbase.com/diseases-and-conditions-articles/what-can-a-yeast-infection-do-to-your-body-371691.html
you definately can't. so go make the yeast now!
Yes, yeast can go bad over time if it is not stored properly or if it is past its expiration date. When yeast goes bad, it may lose its ability to ferment and leaven dough effectively.