Relationship between Photosynthesis and Cellular Respiration (Equations…
Relationship between Photosynthesis
and Cellular Respiration
The 4 phases of cellular respiration
Glycolosis is the formation of two molecules of pyruvate, which are formed from the breakdown of glucose (sugar)
The prep reaction stage involves the pyruvate entering the mitochondrial matrix in order to produce a 2-carbon acetyl group. From there, Acetyl-CoA is formed and electrons in the form of a hydrogen atom are collected and CO2 is released into the cytoplasm.
The Citric Acid Cycle
The citric acid cycle starts off with the formation of citrate from 2-carbon acetyl groups and a 4-carbon molecule. Oxidation occurs shortly after and the NAD+ from the prep reaction is reduced to NADH, and CO2 is released. FADH2 and NADH are formed from reductions, ATP is produced. Cycle repeats.
ETC (Electron Transport Chain)
The electrons from NADH and FADH2 travel down carriers until they are received by oxygen, and combines with hydrogen ions to make water. The hydrogen ions are pumped into the intermembrane space, forming an electrochemical gradient. ATP synthase synthesizes ADP+P into ATP.
Equations of photosynthesis and Cellular Respiration
C6O2 + 6H2O -> C6H12O6
C6H12O6 + 6O2 -> 6CO2 + 6H2O
Connections between Photosynthesis and Cellular Respiration
The products from one process is the reactant of the other process.
In photosynthesis, glucose is made, which cellular respiration uses to make ATP. The glucose turns back into carbon dioxide, which is used in photosynthesis
Equations of photosynthesis and cellular respiration are the opposites of each other
Photosynthesis breaks down water to form oxygen, and cellular respiration combines oxygen and hydrogen to form water
Cellular respiration requires oxygen to release carbon dioxide, while photosynthesis requires carbon dioxide to release oxygen.