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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. H. Energy Energy storing molecule _G___9. The anaerobic process of splitting glucose and forming two molecules of pyruvic acid I. ATP __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 1 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? Alcoholic Fermentation Lactic Acid Fermentation Organism: ETHYL ALCOHOL YEAST & BACTERIA 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 Total ATP =___30-38 ATP_______ 4. Name the two stages of photosynthesis and list the starting molecule(s) and ending molecule(s) of each. Stages LIGHT DEPENDENT REACTION Starting Molecule(s) LIGHT & H2O LIGHT SPLITS H2O KEEPING THE HYRDOGENS HYDROGENS + CO2 Product(s) O2 IS RELEASED & THE HYDROGENS ARE TAKEN TO THE NEXT STEP C6H12O6 LIGHT INDEPENDENT REACTION 5. What is the general chemical equation of photosynthesis? WATER + CARBDON DIOXIDE + LIGHT SUGAR + OXYGEN H2O + CO2 C6H12O6 + O2 2 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. 3