Photosynthesis (Light Reactions)

The NDSU Virtual Cell Animation Project presents 'Photosynthesis - The Light Reactions'. For more information please see http://vcell.ndsu.edu/animations

Photosynthesis is the means by which plants make use of chlorophyll and light to produce energy. This section covers the basic stages of the light reactions in the photosynthetic electron transport chain.

Category:

Education

Tags:

• photosynthesis
• light
• reactions
• chloroplast
• science
• plants

[VeraciousAmI]

I hate plants. The Krebs cycle is better than this.

[BooRadney]

This video just confused the shit out of me. thanks

[FabFubar]

@AnnaEvolut true, but i don't expect photosynthesis to evolve due to the thick layer of ice on Europa in the first place, so organisms will likely need alternative energy sources. without photosynthesis it will also be unlikely for the organisms to have excess energy to be able to make and store energy-rich compounds for the other organisms to live from. the first thing that i thought of was chemolithotrophy, indeed something typical of microbes. so probably no higher organisms.

[eldiabloArgentinaa]

excellent visual explanation. thank you

[AnnaEvolut]

@FabFubar the thing is that photosynthesis produces OXYGEN as a by-product which makes aerobic respiration possible which renders much much more energy (ATP and NADH -equivalents). so much more complex multicellular organisms, which need more energy can evovle. there are no chemolithotrophs outside the kingdoms of bacteria and archea

[LifeIsABigPuzzle]

@FabFubar Cool! :D

[FabFubar]

crystal clear movie, however I think you'll only understand this and that this will only help if you've already had a detailed course in plant metabolism/physiology.

[FabFubar]

@LifeIsABigPuzzle I don't think photosynthesis is an absolute requirement for life. I think of it this way: all a primitive cell needs to survive and evolve is energy to power its processes. For plants, that energy comes from the sun, but these bacteria (if we can call them that) from Europa (if they exist) will probably have another energy source. Like organic compounds in rocks (chemolithotrophy). Their metabolism could be quite different, evolved around another energysource.

[hmlsport]

You should update the video, including cyclic photophosphorylation from PS1

[RyanWhitefreeze]

@Shawny9111 who said he was gonna become a biologist?

[Shawny9111]

@BooRadney If this confuses you, might want to consider a new career path.

[TheThreadshitter]

oh I LOVE plastoquinone Qb.