AP BIOLOGY

CELL RESPIRATION

ANAEROBIC RESPIRATION FERMENTATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A student places warm water, yeast, and sugar in a place bottle. Then she carefully places a plastic balloon over the bottle. As time pass the balloon beings to inflate. Which of the following is occurring?
A
As the yeast eats the carbon dioxide it releases oxygen which fills the balloon
B
As the yeast eats the sugar it release a gas called carbon dioxide which fills the balloon
Explanation: 

Detailed explanation-1: -Did you know that yeast is a living thing? Mix the yeast with hot water and sugar and as the yeast eats the sugar it releases carbon dioxide that blows up the balloon. Test different amounts of sugar and see what happens!

Detailed explanation-2: -As the yeast feeds on the sugar, it produces carbon dioxide gas. This process is known as fermentation. The trapped CO2 accumulates inside the balloon, slowly inflating it. A very similar process happens as bread rises.

Detailed explanation-3: -Yeast Balloon Experiment Conclusion As the yeast grows and converts the sugar into energy, it releases Carbon Dioxide gas in a process called fermentation. The tiny little carbon dioxide (CO2) gas bubbles get trapped in bread dough as it bakes and is what makes bread so soft and spongy!

Detailed explanation-4: -As the yeast eats the sugar, it releases a gas called carbon dioxide. The gas fills the bottle and then fills the balloon as more gas is created.

There is 1 question to complete.