Photosynthesis Worksheet - Baltimore Polytechnic Institute



Photosynthesis & Cellular Respiration Worksheet Part I

Vocabulary: Match the phrases on the left with the term that best fits. Use answers only one time.

____1. Organisms that make their own food A. Chloroplasts

____2. Site of photosynthesis B. Aneorobic

____3. Process occurs in a mitochondrion C. Aerobic

____4. C6H12O6 D. Glucose

____5. Process does not require oxygen E. ATP

____6. Process requires oxygen F. Kreb’s cycle

____7. Adenosine diphosphate G. Glycolysis

____8. Energy storing molecule H. Energy

____9. The anaerobic process of splitting glucose I. ADP

and forming two molecules of pyruvic acid

J. Autotrophs

____10. The ability to do work

Directions: Answer each of the following questions in a clear and concise manner.

1. Compare and discuss how cells store energy and release energy using the reactions of ATP. Be specific! You may draw the cycle.

2. Name the 4 processes of aerobic cellular respiration. How much ATP’s does each process produce?

|4 Processes of Cellular Respiration: |How much ATP produced (lots, none, or a little) |

| | |

| | |

| | |

| | |

3. Name the two stages of photosynthesis and list what happens and what is produced during each.

|Stages |What Happens |Product(s) |

| | | |

| | | |

| | | |

| | | |

4. What is the general chemical equation of photosynthesis?

5. Compare & contrast the equations for photosynthesis and aerobic respiration.

6. Complete the following chart comparing photosynthesis and respiration:

| |Photosynthesis |Respiration |

|Type of organisms that do it | | |

|Cell part that does it | | |

|Chemical Reaction | | |

|Where energy comes from | | |

|Where energy ends up | | |

Photosynthesis & Respiration Part II

1. What is the overall reaction for photosynthesis?

2. How does this compare to the overall reaction for cellular respiration?

3. Where does the energy for photosynthesis come from?

4. What plant pigment absorbs light for photosynthesis?

5. Explain why chlorophyll appears green to us in terms of what happens to different wavelengths of light that strike a chlorophyll molecule.

6. In what organelle of a plant cell does photosynthesis take place?

7. What are the two stages of photosynthesis?

8. * In which part of the chloroplast does each stage occur?

9. What happens to water molecules in the light reactions?

10. What photosynthesis waste product is formed in the light reactions?

11. What product of the light reactions is used up in the Calvin cycle?

12. What happens to carbon dioxide molecules in the Calvin cycle reactions?

13. Euglena is a unicellular organism with both choloroplasts and mitochondria. If scientists remove all of the chloroplasts from a Euglena, what biological function can it no longer perform?

14. Some bacteria, called chemotrophs can make their own food using the energy of certain chemicals in their environment instead of light. This process is called chemosynthesis. Are these bacteria autotrophs or heterotrophs?

Respiration Questions

1. What are the 4 phases of the cellular respiration process?

2. Where in the cell do the Krebs (Citric Acid) cycle and electron transport chain of cellular respiration occur?

3. In which phase of cellular respiration is carbon dioxide made?

4. In which phase of cellular respiration is glucose a substrate?

5. Yeast are a type of organism that can do both aerobic and anaerobic respiration, depending on whether or not oxygen is available. A scientist does an experiment on two identical populations of yeast. One population is grown in an open container and receives oxygen from the air, while the other is grown in a closed container. After two weeks of growth, he measures how many yeast are in each population. Which one will have the larger population, and why?

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