Question

activator ~ 3 min highlight the correct answer a student places four small aquatic snails in a test tube containing bromothymol blue solution. the solution will change color from blue to yellow if the carbon dioxide level increases. the student seals the test tube and notes that the solution is blue. after a few hours, the student observes that the solution is yellow. what cellular process did the snails perform that caused the color of the solution to change? a. cellular respiration c. fermentation b. chemical digestion d. photosynthesis

Explanation:

Cellular respiration is a process where organisms convert nutrients into energy, releasing carbon dioxide as a by - product. In this case, the snails performed cellular respiration, which increased the carbon dioxide level in the test tube. Bromothymol blue solution changes from blue to yellow in the presence of higher carbon dioxide levels. Chemical digestion is related to breaking down food in the digestive system and does not produce carbon dioxide in this context. Fermentation (an anaerobic process) in animals (snails are animals) usually produces lactic acid, not a significant amount of carbon dioxide to cause this color change. Photosynthesis is a process that consumes carbon dioxide (to produce oxygen and glucose), which would not cause the solution to turn yellow.

Answer:

A. cellular respiration