Basic process of photosynthesis

Photosynthesis is a process where by energy from light is harvested and used to drive synthesis of carbohydrates from carbon dioxide and water. Photophosphorylation is a process where the light energy captured by the photosynthetic organisms is transformed into the phosphate bond energy of ATP. Components of photosystem I and II transfer the electrons from water to NADP. Second step of photosynthesis is called Calvin’s cycle and it is a dark reaction. There are two stages here, I and II. Stage I is carbon dioxide fixation and stage II is the regeneration phase. Photorespiration is the process wherein oxygen consumption occurs in illuminated temperature zone of plants under high oxygen and low carbon dioxide. C4 cycle is the pathway adopted by C4 plants to conserve the carbon dioxide released via photorespiration. It occurs in mesophyll cells.

Plants cells contain a number of structures that are involved in the process of photosynthesis:

Basic process of photosynthesis
Photosynthesis is a process where by energy from light is harvested and used to drive synthesis of carbohydrates from carbon dioxide and water.


Basic process of photosynthesis

According to NASA, of all the sunlight that reaches earth, only about 48 percent of it hits the surface and only a portion of that is captured through photosynthesis. The rest is reflected back by earth’s atmosphere or absorbed by the atmosphere.


Photosynthesis - perfect chemistry in Nature

Chloroplast structure
Chloroplast is a plant subcellular organelle where photosynthesis takes place. Outer membrane of chloroplast is permeable. Inner membrane encloses stroma. Thylakoid is flattened membrane surrounded vesicle. This is the place where light reaction occurs. In stroma, fluid surrounding the thylakoids is the place where the dark reaction occurs. Chlorophylls are the green pigments; they are present in the thylakoid membrane of chloroplast. They absorb deep blue and red light. Secondary light absorbing pigments are called accessory pigments. They are carotenoids and phycobilins. Photosystems are the light absorbing pigments of thylakoid membrane arranged in functional sets.

biochemistry - How does photosynthesis work

Only plants can photosynthesize, but both plants and animals depend on respiration to release the chemical potential energy originally captured through photosynthesis.

Solar Fuels and Artificial Photosynthesis- Learn Chemistry

Organic chemists make building blocks of COOH, carbon linked to two oxygen atoms and one hydrogen atom (H). As we discussed earlier, H is not really an atom, but a neutron. Then ? Because H is not stable in nature, organic chemistry is extremely complex. Organic chemists add outer attachments of OH, O, C, and CH to COOH, and add other molecules to create the most complex patterns imaginable. Why not look at the way God put things together, combining carbon dioxide with water through photosynthesis, keeping the carbon atom and releasing O2 to produce organic compounds? Plants do not release H or C. Organic chemistry then becomes amazingly simple.

Biology: Photosynthesis - chemistry24

The figure illustrates how closely photosynthesis and respiration are linked. As you can see, thanks to these two life-sustaining processes, plants and animals depend on each other to survive.