NEET BIOLOGY

Detailed explanation-1: -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-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.

Detailed explanation-3: -The glucose concentration has been shown to affect the rate of yeast fermentation and carbon dioxide production. We hypothesized if there is a moderate concentration of glucose it will cause fermentation rates to increase and with it an increase production of carbon dioxide.

Detailed explanation-4: -The highest level of CO2 was produced after 3 h averaging 8.8 mL/min (1.5 g yeast) and 21.7 mL/min for the mixture with 5 g of yeast.

Detailed explanation-5: -Bubbles form as the yeast ferment the sugar and release carbon dioxide. Saccharomyces cerevisiae is widely recommended for baking and brewing purposes. When yeast is mixed with sugar and lukewarm water, it will activate the yeast.