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During preparation, baking soda (NaHCO3 ) is added to the water to create a solution. Which of the options below is the best reason why baking soda was added?(1 point) Responses To keep the water from changing into another color To keep the water from changing into another color To keep the elodea plant from decaying To keep the elodea plant from decaying To add oxygen to the solution that the plant needs as a reactant of photosynthesis To add oxygen to the solution that the plant needs as a reactant of photosynthesis To add carbon dioxide to the solution that the plant needs as a reactant of photosynthesis To add carbon dioxide to the solution that the plant needs as a reactant of photosynthesis Question 7 During the first portion of the experiment, the lights were turned off and a timer was set for 5 minutes. No bubbles were released during this 5 minutes. Which of the answer choices below is the best reason why. (1 point) Responses There was no oxygen present for photosynthesis to occur There was no oxygen present for photosynthesis to occur There was no carbon dioxide present for photosynthesis to occur There was no carbon dioxide present for photosynthesis to occur There was no light present for photosynthesis to occur There was no light present for photosynthesis to occur Question 8 During the second part of the experiment you can see bubbles begin to appear when they didn't before. Which of the answer choices below is the best reason why?(1 point) Responses Light was applied to the scenario so photosynthesis could occur Light was applied to the scenario so photosynthesis could occur Oxygen was present in the water when it wasn't before Oxygen was present in the water when it wasn't before Carbon dioxide was present in the water when it wasn't before Carbon dioxide was present in the water when it wasn't before Question 9 Use the data table below to answer the following multiple choice questions. What trend can be observed in the number of bubbles produced during Trial 1 over the 10-minute period? (1 point) Responses The number of bubbles remains constant. The number of bubbles remains constant. The number of bubbles increases at first, then decreases. The number of bubbles increases at first, then decreases. The number of bubbles increases steadily. The number of bubbles increases steadily. The number of bubbles decreases steadily.

1 answer

Here are the best answers based on the context provided for each question:

Question 6: Why was baking soda added to the water?
Best Response: To add carbon dioxide to the solution that the plant needs as a reactant of photosynthesis.
Explanation: Baking soda (NaHCO3) dissolves in water to release carbon dioxide, which is essential for photosynthesis in plants.

Question 7: Why did no bubbles release during the first 5 minutes with the lights off?
Best Response: There was no light present for photosynthesis to occur.
Explanation: Photosynthesis requires light to produce oxygen and bubbles (from the release of oxygen). Without light, the process cannot occur.

Question 8: Why did bubbles begin to appear during the second part when light was applied?
Best Response: Light was applied to the scenario so photosynthesis could occur.
Explanation: The introduction of light enables the process of photosynthesis to begin, resulting in the production of oxygen and observable bubbles.

Question 9: What trend can be observed in the number of bubbles produced during Trial 1 over the 10-minute period?
Best Response: The number of bubbles increases steadily.
Explanation: If the question implies a consistent increase without any mention of fluctuation, this would typically suggest a steady rise in bubble production over time.

Feel free to ask if you have any more questions or need further clarification!