To determine which molecules could be represented by the circle labeled Z, we need to consider the relationships between the processes of cellular respiration occurring in mitochondria and photosynthesis occurring in chloroplasts.
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Carbon Dioxide (CO2)
- Produced in cellular respiration (as a waste product).
- Required in photosynthesis (as a reactant).
- Conclusion: Letter Z could be carbon dioxide.
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Water (H2O)
- Produced in cellular respiration (as a byproduct).
- Required in photosynthesis (as a reactant).
- Conclusion: Letter Z could be a water molecule.
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Glucose (C6H12O6)
- Produced in photosynthesis (as a product).
- Required in cellular respiration (as a reactant).
- Conclusion: Letter Z could be a glucose molecule.
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Oxygen (O2)
- Produced in photosynthesis (as a byproduct).
- Required in cellular respiration (as a reactant).
- Conclusion: Letter Z could be an oxygen molecule.
Based on this analysis, the responses that apply to molecule Z are:
- Letter Z could be carbon dioxide because it is produced in cellular respiration and is a reactant of photosynthesis.
- Letter Z could be a water molecule because it is produced in cellular respiration and is a reactant of photosynthesis.
- Letter Z could be a glucose molecule because it is produced in photosynthesis and is a reactant of cellular respiration.
- Letter Z could be an oxygen molecule because it is produced in photosynthesis and is a reactant of cellular respiration.
All four of the following options are valid representations of Z based on the roles of the molecules in cellular respiration and photosynthesis.