LIFE SCIENCE

Detailed explanation-1: -Yeast is a fungus used for making bread. It is mixed with the dough, where it grows actively and releases carbon dioxide. This carbon dioxide helps in the rising of the dough. When this dough is subjected to high baking temperatures, carbon dioxide escapes from the dough resulting in soft and fluffy bread.

Detailed explanation-2: -Yeasts feed on sugars and starches, which are abundant in bread dough! They turn this food into energy and release carbon dioxide gas as a result. This process is known as fermentation. The carbon dioxide gas made during fermentation is what makes a slice of bread so soft and spongy.

Detailed explanation-3: -Carbon Dioxide Helps Bread Rise As the dough rises and proofs, carbon dioxide is formed; this is why the dough volume increases. The carbon dioxide expands and moves as the bread dough warms and bakes in the oven. The bread rises and sets.

Detailed explanation-4: -As the yeast feeds on the sugar, it produces carbon dioxide. With no place to go but up, this gas slowly fills the balloon. A very similar process happens as bread rises. Carbon dioxide from yeast fills thousands of balloonlike bubbles in the dough.

Detailed explanation-5: -Once reactivated, yeast begins feeding on the sugars in flour, and releases the carbon dioxide that makes bread rise (although at a much slower rate than baking powder or soda). Yeast also adds many of the distinctive flavors and aromas we associate with bread.