Investigating the light dependent reaction in photosynthesis

In notating redox reactions, chemists typically write out the electrons explicitly:This half-reaction says that we have solid copper (with no charge) being oxidized (losing electrons) to form a copper ion with a plus 2 charge.

Photosynthesis is a redox process where oxidation and reduction both occurs

Immediatelyafter exposure to 14CO2, the plant's photosynthetic tissue iskilled by immersing it in boiling alcohol, and all of the biochemical reactions cease.


the site of light-independent reactions of photosynthesis.

The ATP then provides energyto some of the other photosynthetic reactions that are causing the conversionof CO2 into sugars.

Exploiting thermal motion in electron transfer (combined molecular dynamics, quantum mechanics to study e transfer in photosynthetic reaction center) Science.


Photosynthesis - Rensselaer Polytechnic Institute (RPI)

It turns out that the overall reaction of photosynthesis takes place in two steps. In the first step, the oxygen in water is oxidized by the light energy:

Jan 03, 2018 · Photosynthesis: Photosynthesis, ..

Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata. (singular: stoma. plural: stomata)

The lower part of the leaf has loose-fitting cells, to allow carbon dioxide to reach the other cells in the leaf. This also allows the oxygen produced in photosynthesis to leave the leaf easily.




Carbon dioxide is present in the air we breathe, at very low concentrations. Even though it forms about .04% of the air, it is a needed factor in light-independent photosynthesis.

In higher concentrations, more carbon is incorporated into carbohydrate, therefore increasing the rate of photosynthesis in light-independent reactions.

C4 photosynthesis (Khan Academy)

During photosynthesis, a process that occurs in plants and in cyanobacteria and also in purple photosynthetic bacteria, light energy is converted into chemical energy. The overall process is described by the chemical equation:

These reactions are marked by the transfer of electrons

The extra electron passed onto the second molecule will eventually be passedon to NADP+ to produce NADPH. The light reaction of photosynthesis in green plants is shown below. In this process, in a scheme that is reminiscent of electron transport in mitochondria, water is oxidized by photosystem II.