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13.5: Summative Questions

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    33499
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    1. Why do plants need to use cellular respiration if they can do photosynthesis?
    2. If a plant is in the dark for 24 hours, what will happen to its mass: will it increase, decrease, or stay the same? Explain your answer.
    3. Explain how the action of your respiratory system relates to the process of cellular respiration.
    4. Which stage of cellular respiration produces the most energy?
    5. How much energy is produced during fermentation? Why do some organisms undergo fermentation instead of respiration?
    6. What factors influenced fermentation the most in your class experiment? Develop a hypothesis for why this might be.
    7. Both glucose and ATP store chemical energy. Why can’t glucose be used to directly power cells instead of ATP?
    8. All experiments should have controls, if possible. Explain what a positive control and a negative control can tell you about your experiment.

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