A group of students conduct a yeast fermentation experiment, shown in the diagrams.
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What question about the flow of matter and energy during fermentation does the experiment answer?
a
Do yeast consume gases in order to undergo reproduction?
b
Does sugar combine with water to provide energy for yeast?
c
Do yeast use sugar for energy and produce a gas?
d
Does water provide yeast with energy to undergo respiration?
c
Do yeast use sugar for energy and produce a gas?
The experiment shown in the diagrams can answer the question: "Do yeast use sugar for energy and produce a gas?" (option c).
The diagram shows a setup for a yeast fermentation experiment. To determine the question about the flow of matter and energy during fermentation that this experiment can answer, let's analyze the diagram.
In the diagram, there is a flask containing a mixture of yeast and sugar solution. On top of the flask, there is a balloon that is attached to a tube that is submerged in water. As fermentation occurs, gas is produced by the yeast, which fills up the balloon.
Based on this setup, the question that the experiment can answer is:
c) Do yeast use sugar for energy and produce a gas?
To arrive at this answer, you can observe that the yeast is provided with a sugar solution. Through fermentation, the yeast converts the sugar into energy and produces gas as a byproduct. This is demonstrated by the gas produced filling up the balloon attached to the flask. Therefore, the experiment is investigating whether yeast use sugar for energy and produce a gas.