Question

One

of the end products of respiration is carbon dioxide, or CO₂. In this activity, you'll measure the amount
of CO₂ yeast produces when it is fermented in five different cups with the following contents:
• Cup A: yeast and lukewarm water
Cup B: yeast, sugar, and lukewarm water
Cup C: yeast, sugar, and hot water
.
●
• Cup D: yeast, sugar, and cold water
Cup E: yeast, sugar, and lukewarm water (covered with plastic wrap)
.
You'll use a ruler to measure the amount of CO₂, or foam, that forms in each cup. Do you think the
amount of foam in the cups will differ? Write down your prediction.

Answer 1

During this lab investigation, the student will measure the amount of carbon dioxide (CO₂) produced by yeast during fermentation. The amount of foam in each cup is expected to differ based on the sugar concentrations. Conducting the experiment and measuring the foam production will provide more accurate results.

Step-by-step explanation:

In this lab investigation, you will measure the amount of carbon dioxide (CO₂) produced by yeast during fermentation. The experiment involves five different cups with varying contents, and you will measure the amount of foam formed in each cup. Your task is to predict whether the amount of foam in the cups will differ.

Carbon dioxide is a by-product of fermentation, and yeast produces more foam when there is more sugar present. Therefore, it is likely that the amount of foam will differ among the cups with different sugar concentrations. For example, Cup B with yeast, sugar, and lukewarm water may produce more foam than Cup A with only yeast and lukewarm water. Similarly, Cup D with yeast, sugar, and cold water may produce less foam compared to Cup B.

To determine the exact differences in foam production, you should conduct the experiment and measure the foam formed in each cup using a ruler.