Recpiration: The Process Of Photosynthesis And Recpiration

Fahad Al-munifi

11/1/15 sun

MR .Hamdy-karim

Photosynthesis and recpiration

Photosynthesis is a process of converting light energy to chemical energy and storing it in bonds of sugar. This process occurs in plants and some algae . Plants need only light energy,co2,and H2o to make sugar .

Chlorophyll is a molecule in chloroplasts that absorbs some of the energy in visible light. photosynthesis in plants occurs in chloroplasts, chloroplasts absorb energy from sunlight and produce sugars through the process of photosynthesis ,the main parts of chloroplasts are grana and stroma. Grana are stacks of coin- shaped, membrane-enclosed compartments called thylakoids , thylakoids are surrounded by a fluid structure called stroma. Stage 1: light-dependent

And the light – independent reaction takes place in the stroma of chloroplasts carbon dioxide molecules [ CO2 ] are needed during this stage of photosynthesis . CO2 is added to a cycle of chemical reactions to build larger molecules , Energy from the light –dependent reactions is used in the reactions . A molecule of a simple sugar is formed . The sugar, usually glucose [ C6H12O6 ] , Stores some of the energy that was captured from sunlight . In the light – independent reactions there is a series of chemical reactions called the Calvin cycle , the Calvin cycle is when the carbon dioxide [ CO6 ] enters the light independent stage of the photosynthesis and the six carbon dioxide [ C06 ] splits into two groups of three carbon dioxide [ 2CO3 ] . there are to groups of molecules called photosystems photosystem 1 and photosystem 2 , in photosystem 2 chlorophyll and other light - absorbing molecules in the thylakoid membrane absorb energy from sunlight . energy is absorbed from sunlight , water molecules are broken - down , hydrogen ions are transported across the thylakoid membrane . chlorophyll and other molecule in the thylakoid absorb energy from sunlight and the high energy electrons move from the chlorophyll and enter and electron transport chain . The enzymes brake – down water [ H2O ] molecules hydrogen ions [ H+ ] and the oxygen [ O2 ] is release as waste the electrons from

The overall process of respiration converts sugar into ATP using oxygen , cellular respiration makes ATP by breaking – down sugar cellular respiration if is not aerobic it requires oxygen and if it is aerobic it take place in the mitochondria . glycolysis must take place first in the cytoplasm , and it splits glucose into two groups of three carbon dioxide [ 2CO3 ]