Complete descriptions of photosynthesis and aerobic respiration
Photosynthesis and cellular respiration
During the light-independent reactions, the energy produced during the light reactions is used to produce sugar molecules from carbon dioxide through a process called the Calvin Cycle. This is because plants need the sugar molecules not only for energy but also for structural elements plants are largely cellulose - which is a long sugar molecule. Can plants live without animals? This process occurs in both plants and animals. The simple carbon sugars produced by photosynthesis are then used in the forming of other organic compounds, such as the building material cellulose , the precursors for lipid and amino acid biosynthesis, or as a fuel in cellular respiration. As the electrons are stripped from water molecules, the water molecules are broken down into oxygen and protons. While the molecules are being rearranged in this cycle, carbon dioxide is produced, and electrons are pulled off and passed into an electron transport system which, just as in photosynthesis, generates a lot of ATP for the plant to use for growth and reproduction.Citric acid cycle Main article: Citric acid cycle This is also called the Krebs cycle or the tricarboxylic acid cycle. The antenna system is at the core of the chlorophyll molecule of the photosystem II reaction center.
The hydrogen ions are released in the thylakoid lumen and therefore contribute to the transmembrane chemiosmotic potential that leads to ATP synthesis.
In aerobic conditions, the process converts one molecule of glucose into two molecules of pyruvate pyruvic acidgenerating energy in the form of two net molecules of ATP. An electron transfer system a series of chemical reactions carries the two electrons to and fro across the thylakoid membrane.
A leaf may be viewed as a solar collector crammed full of photosynthetic cells. There is a lot of water on the earth, and every water molecule is composed of two hydrogen atoms and one oxygen atom.
During the pay-off phase of glycolysis, four phosphate groups are transferred to ADP by substrate-level phosphorylation to make four ATP, and two NADH are produced when the pyruvate are oxidized.
This means that animals have to survive solely through respiration. The energy stored in the phosphate bond is used in other cellular reactions and is often regarded as the energy "currency" of the cell.
Glycolysis Out of the cytoplasm it goes into the Krebs cycle with the acetyl CoA. Let me briefly summarize what both processes do: Photosynthesis Is the chemical process where plants can capture and organically fix the energy of the sun.
Sufficient energy ionises the molecule, with the electron being 'freed' leaving a positively charged chlorophyll ion.