preview

World War Ii Through the 1970s

Decent Essays

ENERGY IN A CELL Lab

Name: Tigist Badeg

Data Table.

Step | Tile | 1. | Energy | 2. | H2O, CO2, Chlorophyll | 3. | Electron Transfer | 4. | ATP + NADPH | 5. | Calvin cycle | 6. | Glucose and O2 | 7. | Glycolysis | 8. | Pyruvic acid | 9. | Krebs cycle | 10. | ATP, H2O and CO2 |

1.What is the importance of the light and dark reactions in photosynthesis?

In light reactions, light is absorbed by chlorophyll in the thylakoid membrane and energizes the electrons. ATP is created from ADP and P. NADP accepts electrons and turns in to NADPH, which is energy. Once the light reactions have taken place, the light-independent, or ‘dark’ reaction occurs in the stroma, where CO2 is converted to sugar. The …show more content…

When cellular respiration is in process, hydrogen atoms are removed from glucose and transferred to oxygen atoms that form CO2 and H2O. A major process of cellular respiration is Glycolysis, which occurs in the cytoplasm just outside of the mitochondria. Glycolysis is the process by which glucose is broken down into two pyruvate molecules. Energy is used to release glucose, which gains 2 ATP. Oxidation follows which produces NADH. . (Mader, 2009)

5. Why are photosynthesis and cellular respiration viewed as complementary processes?

Photosynthesis is the process of producing glucose, as for Cellular respiration is the process of breaking that glucose down in order to produce and release the energy stored in photosynthesis. Both of these processes create ATP (energy), photosynthesis and cellular respiration both function as a circle – the first using CO2 and releasing O2, while the other uses O2 and releases CO2. Another reason that both processes are complementary is because they entail the same components of H2O, energy, CO2, O2 and glucose, but the reactions are opposite to each other as explained above. (Mader, 2009)

6. Describe the similarities and differences between photosynthesis and cell respiration.

Photosynthesis is the procedure in which green plants use sunlight, carbon dioxide and water to make food and oxygen and cellular respiration is the process where cells use this food to

Get Access