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
Does sugar combine with water to provide energy for yeast?
b
Does water provide yeast with energy to undergo respiration?
c
Do yeast consume gases in order to undergo reproduction?
d
Do yeast use sugar for energy and produce a gas?
d
Do yeast use sugar for energy and produce a gas?
The answer would be D. Do yeast use sugar for energy and produce a gas?
The question that the experiment answers is:
d) Do yeast use sugar for energy and produce a gas?
To arrive at this answer, we can observe the diagrams provided in the experiment. The diagrams likely show the setup of the yeast fermentation experiment, which involves adding yeast to a sugar solution.
To understand the flow of matter and energy during fermentation, we need to consider the inputs and outputs of the process. In this case, the yeast is added to a sugar solution. Yeast typically undergoes fermentation to produce energy in the absence of oxygen.
During fermentation, yeast metabolizes sugar (a source of energy) and converts it into alcohol and carbon dioxide gas. The production of gas is an indicator of fermentation, and it proves that yeast uses sugar for energy and releases a byproduct in the form of gas.
Therefore, the correct answer is d) Do yeast use sugar for energy and produce a gas?