Educational worksheet on photosynthesis and cellular respiration, featuring vocabulary matching, a comparative table, and a diagram showing energy flow in an ecosystem.

Photosynthesis & Cellular Respiration Worksheet Solution

#### Vocabulary Matching
Match the phrases on the left with the term that best fits. Not all terms will be used, and some may be used more than once.

1. Organisms that make their own food
- Answer: J. Autotrophs

2. Site of photosynthesis
- Answer: A. Chloroplasts

3. Process occurs in cytoplasm
- Answer: G. Glycolysis

4. C₆H₁₂O₆
- Answer: D. Glucose

5. Process does not require oxygen
- Answer: B. Anaerobic

6. Process requires oxygen
- Answer: C. Aerobic

7. Adenosine triphosphate
- Answer: E. ATP

8. Energy storing molecule
- Answer: I. ADP (Note: ADP is an energy-storing molecule, but ATP is the primary energy currency of the cell.)

9. The anaerobic process of splitting glucose and forming two molecules of pyruvic acid
- Answer: G. Glycolysis

10. The ability to do work
- Answer: H. Energy

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#### Fill out the table below:

| | Cellular Respiration | Photosynthesis |
|---------------|---------------------------|---------------------|
| Reactants | Glucose (C₆H₁₂O₆) + Oxygen (O₂) | Carbon dioxide (CO₂) + Water (H₂O) + Sunlight energy |
| Products | Carbon dioxide (CO₂) + Water (H₂O) + ATP (energy) | Glucose (C₆H₁₂O₆) + Oxygen (O₂) |
| What organelle? | Mitochondria | Chloroplasts |

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#### 12. Use the picture to the right to help you describe the relationship between photosynthesis and cellular respiration:

- Photosynthesis occurs in chloroplasts and uses sunlight energy, carbon dioxide (CO₂), and water (H₂O) to produce glucose (C₆H₁₂O₆) and oxygen (O₂). This process stores energy in the chemical bonds of glucose.
- Cellular respiration occurs in mitochondria and breaks down glucose (C₆H₁₂O₆) in the presence of oxygen (O₂) to release carbon dioxide (CO₂), water (H₂O), and ATP (energy). This process releases the stored energy from glucose for cellular work.
- The relationship is cyclical:
- Photosynthesis produces glucose and oxygen, which are essential for cellular respiration.
- Cellular respiration consumes glucose and oxygen, producing carbon dioxide and water, which are inputs for photosynthesis.
- Sunlight energy is captured during photosynthesis and converted into chemical energy (ATP) during cellular respiration.

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#### 13. What kind(s) of organisms perform photosynthesis?

- Answer: Photosynthesis is primarily performed by plants, algae, and certain bacteria (e.g., cyanobacteria). These organisms are autotrophs and use sunlight to convert carbon dioxide and water into glucose and oxygen.

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#### 14. What kind(s) of organisms perform cellular respiration?

- Answer: Cellular respiration is performed by almost all living organisms, including plants, animals, fungi, and bacteria. Both autotrophs (organisms that perform photosynthesis) and heterotrophs (organisms that consume organic matter) rely on cellular respiration to generate energy for cellular activities.

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Final Answer Summary:

1. J. Autotrophs
2. A. Chloroplasts
3. G. Glycolysis
4. D. Glucose
5. B. Anaerobic
6. C. Aerobic
7. E. ATP
8. I. ADP
9. G. Glycolysis
10. H. Energy

Table:
- Cellular Respiration: Reactants = Glucose + Oxygen; Products = CO₂ + H₂O + ATP; Organelle = Mitochondria
- Photosynthesis: Reactants = CO₂ + H₂O + Sunlight; Products = Glucose + O₂; Organelle = Chloroplasts

Relationship: Photosynthesis produces glucose and oxygen, which are consumed in cellular respiration to produce ATP and release CO₂ and H₂O, completing a cycle.

Organisms performing photosynthesis: Plants, algae, cyanobacteria.
Organisms performing cellular respiration: Almost all living organisms.

Boxed Final Answer:
\boxed{J, A, G, D, B, C, E, I, G, H}