Yeast will not be able to grow if it has been boiled. However, dough may still be able to rise with other raising agents, e.g. baking powder.
The yeast cells in bread dough ferment sugars and produce gas (carbon dioxide). This makes the dough rise.
The yeast consumes the natural sugars in the dough and causes bubbles to form. This causes the dough to rise. It's being blown up by the yeast.
Yeast makes the crust rise.
It is because of the yeast.
With yeast, one of yeasts main point is to make dough rise.
Yes, if yeast dough is left to rise too long, the yeast will consume all of the available sugars. Then the dough will not be able to rise when baking, resulting in a heavy, tough product.
Yeast dough is dough (basically a mixture of flour, water, salt) to which yeast (a form of fungi) has been added to cause the dough to 'rise', add in dimension by filling the dough with carbon dioxide given off by the yeast. Dough without yeast does not expand.
To allow the dough to rise so you get a lighter, less dense end product.
Yeast.
It makes dough rise.
Yeast is the ingredient used in baking that causes the dough to rise.
To show that yeast was responsible for making the dough rise, you can conduct an experiment where you prepare two batches of dough- one with yeast and one without. Allow both doughs to rise, and observe that the dough with yeast rises significantly more due to the yeast's fermentation process producing gases that make the dough expand.