Educational worksheet comparing cellular respiration and photosynthesis, featuring vocabulary matching and a comparative table.

Here's the completed worksheet with explanations:

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Vocabulary Matching:

1. Organisms that make their own food → J. Autotrophs
*Explanation:* Autotrophs (like plants and some bacteria) produce their own food using light or chemical energy.

2. Site of photosynthesis → A. Chloroplasts
*Explanation:* Photosynthesis occurs in chloroplasts, which contain chlorophyll to capture light energy.

3. Process occurs in cytoplasm → G. Glycolysis
*Explanation:* Glycolysis is the first stage of cellular respiration and takes place in the cytoplasm.

4. C₆H₁₂O₆ → D. Glucose
*Explanation:* This is the molecular formula for glucose, a simple sugar used as fuel in cells.

5. Process does not require oxygen → B. Anaerobic
*Explanation:* Anaerobic processes (like glycolysis and fermentation) occur without oxygen.

6. Process requires oxygen → C. Aerobic
*Explanation:* Aerobic processes (like Kreb’s cycle and electron transport chain) need oxygen to fully break down glucose.

7. Adenosine triphosphate → E. ATP
*Explanation:* ATP is the full name for adenosine triphosphate — the primary energy currency of the cell.

8. Energy storing molecule → E. ATP *(also could be D. Glucose, but ATP is more directly “storing” usable energy)*
*Explanation:* While glucose stores potential energy chemically, ATP is the molecule that directly powers cellular work.

9. The anaerobic process of splitting glucose and forming two molecules of pyruvic acid → G. Glycolysis
*Explanation:* Glycolysis breaks one glucose molecule into two pyruvate molecules and occurs without oxygen.

10. The ability to do work → H. Energy
*Explanation:* Energy is defined as the capacity to do work — whether mechanical, chemical, or thermal.

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Table: Cellular Respiration vs. Photosynthesis

| | Cellular Respiration | Photosynthesis |
|--------------------------|----------------------------------------------|--------------------------------------------|
| Reactants | Glucose (C₆H₁₂O₆) + Oxygen (O₂) | Carbon dioxide (CO₂) + Water (H₂O) + Light |
| Products | Carbon dioxide (CO₂) + Water (H₂O) + ATP | Glucose (C₆H₁₂O₆) + Oxygen (O₂) |
| What organelle? | Mitochondria (mainly; glycolysis in cytosol) | Chloroplasts |

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📝 Key Notes:

- Cellular Respiration Equation:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP

- Photosynthesis Equation:
6CO₂ + 6H₂O + Light → C₆H₁₂O₆ + 6O₂

- Organelles:
- Photosynthesis → Chloroplasts (in plant cells)
- Cellular Respiration → Mitochondria (in eukaryotic cells); glycolysis happens in cytoplasm

- ATP is produced in both processes, but it’s the *end product* of respiration and an *intermediate* in photosynthesis (used to build glucose).

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✔ All answers are matched correctly based on standard biology curriculum. Let me know if you’d like diagrams or deeper explanations!