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Science: Photosynthesis and Cellular Respiration

How cells make and use energy

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Science: Photosynthesis and Cellular Respiration

How cells make and use energy

Science - Grade 6-8

Instructions: Read each problem carefully. Answer in complete sentences and show your thinking when needed.
  1. 1

    What is the main purpose of photosynthesis in plants?

  2. 2

    What is the main purpose of cellular respiration in living cells?

  3. 3

    List the reactants needed for photosynthesis.

  4. 4

    List the products made by photosynthesis.

  5. 5

    List the reactants needed for cellular respiration.

  6. 6

    List the products made by cellular respiration.

  7. 7

    In which organelle does photosynthesis take place?

  8. 8

    In which organelle does most cellular respiration take place?

  9. 9

    Explain how photosynthesis and cellular respiration are related.

  10. 10

    A plant is placed in sunlight and given water and carbon dioxide. What two main substances will it produce during photosynthesis?

  11. 11

    A muscle cell uses glucose and oxygen. What process is it carrying out, and what does it release?

  12. 12

    Why do animals depend on photosynthesis even though animals do not perform photosynthesis?

  13. 13

    True or false: Only plants carry out cellular respiration. Explain your answer.

  14. 14

    Describe what happens to energy during photosynthesis and during cellular respiration.

  15. 15

    Complete the comparison: Photosynthesis mostly happens in plant cells and requires light, while cellular respiration happens in both plant and animal cells and does not require light directly. Explain why both processes are important.

LivePhysics.com Science - Grade 6-8

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