Photosynthesis & Cellular Respiration Worksheet



Photosynthesis & Cellular Respiration Worksheet

Name:__________________________________________Period:_______

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

__L__1. Organisms that make their own food A. Chloroplasts

__A__2. Site of photosynthesis B. Aneorobic

__J__3.Process occurs in a mitochondrion C. Aerobic

__K__4.C6H12O6 D. light-independent reaction

_D___5. Process does not require oxygen E. chlorophyll

_C___6. Process requires oxygen F. sunlight

_H___ 7. The ability to do work G. Glycolysis

__I__8. Energy storing molecule H. Energy

_G___9. The anaerobic process of splitting glucose I. ATP

and forming two molecules of pyruvic acid

__F__ 10. This starts the process of photosynthesis J. Kreb’s cycle

__B__ 11. This process does not require sunlight. K. Glucose

__E__ 12. The pigment that traps sunlight L. Autotrophs

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 ATP. Be specific! You may draw the cycle.

ATP IS THE ENERGY STORING MOLECULE. THE ENERGY IS STORED IN THE BONDS OF THE 2ND & 3RD PHOSPHATE. WHEN THE BOND IN BROKEN BETWEEN THE 2ND & 3RD PHOSPHATE ENERGY IS RELEASED. ATP IS NOW ADP. T O GET BACK TO ATP ALL THAT HAS TO HAPPEN IS THAT A PHOSPHATE IS BONDED TO THE 2ND PHOSPHATE ON ADP

2. Compare lactic acid fermentation and alcoholic fermentation by describing what pyruvic acid is changed in to. Be sure to include what type of organism each one takes place in.

| |What is pyruvic acid changed into? |Organism: |

|Alcoholic Fermentation | | |

| |ETHYL ALCOHOL |YEAST & BACTERIA |

|Lactic Acid Fermentation | | |

| |LACTIC ACID |ANIMALS/HUMANS |

3. Name the three processes of aerobic cellular respiration. How many ATP’s does each process produce, and what is the total ATP produced from one glucose?

|3 Processes of Cellular Respiration: |# ATP produced: |

| |2 |

|GLYCOLYSIS | |

|KREBS CYCLE |2 |

|ELECTRON TRANSPORT CHAIN |28 - 34 |

4. Name the two stages of photosynthesis and list the starting molecule(s) and ending molecule(s) of each.

|Stages |Starting Molecule(s) |Product(s) |

| |LIGHT & H2O |O2 IS RELEASED & THE HYDROGENS ARE TAKEN TO THE |

|LIGHT DEPENDENT REACTION |LIGHT SPLITS H2O KEEPING THE HYRDOGENS |NEXT STEP |

| |HYDROGENS + CO2 |C6H12O6 |

|LIGHT INDEPENDENT REACTION | | |

| | | |

5. What is the general chemical equation of photosynthesis?

WATER + CARBDON DIOXIDE + LIGHT ( SUGAR + OXYGEN

H2O + CO2 ( C6H12O6 + O2

6. When and why does our body use lactic acid fermentation?

LACTIC ACIDS FERMENTATION OCCURS DURING STRENUOUS EXERCISE WHEN NOT ENOUGH OXYGEN IS AVAILABLE FOR YOUR MUSCLE CELLS TO USE TO CREATE ATP

7. Explain how the equations for photosynthesis and cellular respiration compare.

THEY ARE BASICALLY THE SAME FORMULA BUT MIRROR IMAGES OF EACH OTHER. WHAT GOES INTO ONE PROCESS IS WHAT COMES OUT OF THE OTHER.

WATER & CARBON DIOXIDE GO INTO PHOTOSYNTHESIS AND WATER AND CARBON DIOXIDE COME OUT OF CELLULAR RESPIRATION.

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Total ATP =___30-38 ATP_______

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