(AKS 4c/ DOK 3) In a lab experiment, a student wants to test the amount of dissolved oxygen produced by algae. The student's experimental design is described below: Flask A: Contains photosynthetic green algae and a beta fish Flask B: Contains photosynthetic green algae but no beta fish Both flasks are placed under a light. The lights are set to cycle between 12 hours of dark and 12 hours of light. The dissolved (amount of used) oxygen concentrations in both flasks are recorded daily. Which of the following is the BEST prediction as to the dissolved oxygen concentrations in both flasks after one week? O A. The dissolved oxygen in flask B will be higher. Flask A will have less dissolved oxygen because the fish uses some of it for cellular respiration. O B. The dissolved oxygen in flask B will be lower. Flask A has a more complete ecosystem so the production of oxygen will be increased. C. There will be no difference in the dissolved oxygen in Flask A and B because the same amount of algae is present in both flasks. D. In both flasks the dissolved oxygen will be the same during the light hours.

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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( AKS 4c / DOK 3) In a lab experiment, a student wants to test the amount of dissolved oxygen produced by algae. The student's
experimental design is described below:
Flask A: Contains photosynthetic green algae and a beta fish
Flask B: Contains photosynthetic green algae but no beta fish
Both flasks are placed under a light. The lights are set to cycle between 12 hours of dark and 12 hours of light. The dissolved (amount of
used) oxygen concentrations in both flasks are recorded daily.
Which of the following is the BEST prediction as to the dissolved oxygen concentrations in both flasks after one week?
O A. The dissolved oxygen in flask B will be higher. Flask A will have less dissolved oxygen because the fish uses some of it for cellular
respiration.
B. The dissolved oxygen in flask B will be lower. Flask A has a more complete ecosystem so the production of oxygen will be
increased.
C. There will be no difference in the dissolved oxygen in Flask A and B because the same amount of algae is present in both flasks.
D. In both flasks the dissolved oxygen will be the same during the light hours.
here to search
lyp
BANG & OLU
insert
立
Transcribed Image Text:( AKS 4c / DOK 3) In a lab experiment, a student wants to test the amount of dissolved oxygen produced by algae. The student's experimental design is described below: Flask A: Contains photosynthetic green algae and a beta fish Flask B: Contains photosynthetic green algae but no beta fish Both flasks are placed under a light. The lights are set to cycle between 12 hours of dark and 12 hours of light. The dissolved (amount of used) oxygen concentrations in both flasks are recorded daily. Which of the following is the BEST prediction as to the dissolved oxygen concentrations in both flasks after one week? O A. The dissolved oxygen in flask B will be higher. Flask A will have less dissolved oxygen because the fish uses some of it for cellular respiration. B. The dissolved oxygen in flask B will be lower. Flask A has a more complete ecosystem so the production of oxygen will be increased. C. There will be no difference in the dissolved oxygen in Flask A and B because the same amount of algae is present in both flasks. D. In both flasks the dissolved oxygen will be the same during the light hours. here to search lyp BANG & OLU insert 立
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