Photosynthesis Vs. Cellular Respiration Review
SBI 4UI
Photosynthesis Vs. Cellular Respiration Review
Complete the following chart to compare these two processes:
Overall word equation:
Photosynthesis
Carbon dioxide and water sugar and oxygen
Overall chemical equation:
6CO2 + 6H2O + light --> C6H12O6 + 6O2
Reactants:
CO2 and H2O and light energy
Cellular Respiration
Oxygen and sugar water and carbon dioxide
6O2 + C6H12O6 --> 6CO2 +6H2O + energy
C6H12O6 and O2 and ATP
Products:
C6H12O6 (or G3P) and O2 and ATP CO2 and H2O and energy (ATP)
Occurs in which organisms?
Occurs in plants, protista (algae), and some bacteria.
Occurs in all living organisms (plants and animals).
Occurs in which organelle?
Chloroplasts
Inner membrane of organelle: Thylakoid membrane
Energy released or required? Main function?
Requires energy
Production of food. Energy Capture.
Mitochondria (Glycolysis occurs in cytoplasm) Cristae (with Matrix "filler" inside of it) Releases energy
Breakdown of food. Energy release.
Stages:
2 stages: The light dependent reaction and light independent reaction (calvin cycle).
4 stages: Glycolysis, Pyruvate oxidation, Krebs cycle, Electron Transport Chain (oxidative phosphorylation).
Production of ATP? What powers ATP synthase?
Yes; goes into calvin cycle to fuel production of g3p.
H+ gradient across thylakoid membrane into stroma. High H+ concentration in the thylakoid lumen.
Yes; theoretical yield is 38 ATP molecules per glucose but actual yield is only about 30-32.
H+ gradient across the inner mitochondria membrane into matrix. High H+ concentration in the intermembrane space
Electron source:
Oxidation H2O at PSII
Final electron acceptor in E.T.C.: NADP+ (forms NADPH )
Glucose, NADH + , FADH2 O2 (Oxygen gas)
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