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PROKARYOTE VS EUKARYOTE PHOTOSYNTHESIS

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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PROKARYOTE VS EUKARYOTE PHOTOSYNTHESIS

Postby latvija05 » Wed Mar 18, 2009 3:46 am

What exactly are the differences and similarities between Eukaryotic Photosynthesis in Green Plants and Prokaryotic Photosynthetic Sulfur Bacteria???
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Postby plasmodesmata11 » Sun Mar 22, 2009 2:23 am

Prokaryotes have infolds that act like thylakoids, but are not actually thylakoids. Maybe that will help.
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Re: PROKARYOTE VS EUKARYOTE PHOTOSYNTHESIS

Postby lehaiyen » Mon Apr 20, 2009 2:28 am

Hi, I just know a little, I hope they will be useful :
The differeces are the source of
1. H+:Plants get H+ from H2O ,Sulphur Bacteria get H+ from the compound of Sulphur(H2S, H2SO4,...)
2. C:Plants get C from CO2, some Sulphur Bacteria get C from oganic substances.
3. Pigment:plants use Chlorophyl and carrotenoit, Sulphur Bacteria use another(sorry, I'm forgot)
4. Plants have thylakoids to proccess photosynthesis, but Bacteria do not have thylakoid, the photosynthesis proccess in cytoplasm.

The similars:
1. They use photon energy, and can't photosynthesis without light.
2. They need H+ and C for the proccess.
3. They need pigment.
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Re: PROKARYOTE VS EUKARYOTE PHOTOSYNTHESIS

Postby sara135 » Tue Jul 12, 2011 11:57 am

In photosynthetic eukaryotes chloroplasts in cells are the sites of photosynthesis but this is not the case in photosynthetic prokaryotes. In eukaryotes, chloroplasts in their cells are abundant, which are not present in photosynthetic prokaryotes.

So, we can say that the makings sites of carbohydrates are different in both. For example when we see the higher plants which are an example of eukaryotic cells, the chloroplasts present mainly in the mesophyll tissues in the leaves. Each cell of mesophyll has 20-100 chloroplasts. Chloroplast has double membrane envelops that encloses a dense fluid filled region called stroma, which contains most of the enzymes required to produce carbohydrate molecules.

Another system of membranes suspended in the stroma, consisting of set of flat disc like sacs called thylakoid. The thylakoid membrane encloses a fluid filled lumen or space, which is separated by thylakoid membrane with stroma. The chlorophyll is embedded in the thylakoid membrane. Chlorophyll absorbs light and converts it into chemical energy of ATP and NADPH; the products which synthesize carbohydrate in the stroma of chloroplast.

But photosynthetic prokaryotes lack chloroplast all together in their cells. So, for carbohydrate synthesizing, they do have unstacked photosynthetic membranes, which work like thylakoid.
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