Two students set up the following apparatus in a lab: a pipette was filled with a mixture of yeast and apple juice and inverted in a test tube filled with warm water. The students observed bubbles being released from the end of the pipette.
Which MOST LIKELY represents the gas being released and the process used to make it?
Responses
A oxygen, respirationoxygen, respiration
B oxygen, photosynthesisoxygen, photosynthesis
C carbon dioxide, respirationcarbon dioxide, respiration
D carbon dioxide, photosynthesis
The correct answer is C) carbon dioxide, respiration.
When yeast undergoes respiration, it produces carbon dioxide as a byproduct. The bubbles observed being released from the pipette are most likely carbon dioxide gas.
The most likely gas being released in this apparatus is carbon dioxide. This is indicated by the presence of bubbles. The process used to make carbon dioxide in organisms is respiration. Therefore, the correct answer is C: carbon dioxide, respiration.
To determine the gas being released and the process used to make it in this experiment, we need to understand the reactions taking place.
In this setup, the mixture of yeast and apple juice undergoes fermentation, a process in which yeast converts sugar (in this case, present in apple juice) into alcohol and carbon dioxide. The warm water provides an ideal environment for yeast to carry out fermentation.
Based on this information, we can now evaluate the given options:
A. Oxygen, respiration: Oxygen is not being released in this experiment. Respiration, the process by which organisms convert glucose and oxygen into carbon dioxide and water, is not occurring here.
B. Oxygen, photosynthesis: While oxygen is produced during photosynthesis, this process does not occur in the given setup. Photosynthesis requires light and chlorophyll, which are not mentioned.
C. Carbon dioxide, respiration: Carbon dioxide is the gas most likely being released during this experiment. Yeast carries out fermentation, which is a type of respiration that does not require oxygen and produces carbon dioxide as one of the waste products.
D. Carbon dioxide, photosynthesis: Photosynthesis does not take place in this setup since it requires light and chlorophyll. Therefore, carbon dioxide is not being produced through photosynthesis.
Based on the above analysis, option C, carbon dioxide, respiration, is the most likely representation of the gas being released and the process used to make it in this experiment.