Table of Contents:
Photosynthesis is Fascinating!
Video taken from the channel: Soliloquy
Polyphenols: What They Are, Why They Work, & How to Eat More of Them Audio Article
Video taken from the channel: Bulletproof
Photosystem II
Video taken from the channel: ndsuvirtualcell
Plant Structure and Adaptations
Video taken from the channel: Amoeba Sisters
Photosynthesis and it’s Mechanism | 3D Animation | cbsebiology4u
Video taken from the channel: cbsebiology4u
Bromination of trans stilbene. Greener Method.
Video taken from the channel: uofgchem2700
Water Splitting: The Oxygen-Evolving Complex
Video taken from the channel: Catalyst University
Overview of Stilbenes in Plants Resveratrol in the Foods You Eat. Resveratrol is quite well known (or to be honest, over-hyped). It’s found in grape Pterostilbene in Food. Pterostilbene is found in blueberries and grapes.
It’s an antioxidant that has shown promise in A.Stilbenes are phytoalexins which can accumulate in vine tissues under biotic and/or abiotic elicitation. They can be produced as inducible compounds by biotic elicitation as an active defense of the plant, and as metabolized stilbenes which are produced by enzymes released by pathogens attempting to eliminate toxic compounds.Natural stilbenes have been a hot research topic due to their intricate structures and diverse biological activities. Although their molecular backbone consists only of 1,2-diphenylethylene units, stilbenes show an enormous diversity with regard to the different units present, the degree of polymerisation, and the pattern of oligomer construction.
of plant secondary metabolite stilbenes, have been applied in different studies. This review focuses on the isolation and identification of stilbenes from edible berries and presents the influence of different external stimuli on their profile in grapes. Keywords Stilbenes.
Stilbenes are phenolic compounds having two aromatic rings with −OH groups and are linked by a double-bonded ethylene bridge ( Akinwumi et al., 2018 ; El Khawand et al., 2018 ). Found in higher plants, stilbenes exist as monomeric, dimeric, trimeric, oligomeric, and polymeric forms, or as glycosides.ral flavonoids and stilbenes. This system is promising for construction of a larger library by employing other polyketide synthases and modification enzymes. INTRODUCTION Flavonoids are polyketide derivatives synthesized exclu-sively in plants, many of which possess various functions, such as acting as floral pigments, signal molecules, and.
Natural stilbenes are an important group of nonflavonoid phytochemicals of polyphenolic structure characterized by the presence of a 1,2-diphenylethylene nucleus.Moreover, commercial sources of stilbenes include many plants cultivated in Asia as folk medicines such as Polygonum cuspidatum, Rhodomyrtus tomentosa, Rheum undulatum, Melaleuca leucadendron, and Euphorbia lagascae, while pterostilbene is found predominantly in bilberries (Vaccinium myrtillus), blueberries (several Vaccinium species), and some other berries as well as in grapes and juice residues.This paper summarizes the molecular mechanisms of four major stilbenes used to treat obesity.
Several pathways involved in regulation of fat metabolism affected by stilbenes, such as adipogenesis, lipogenesis, lipolysis, thermogenesis, and gut microbiota, will be introduced. In summary, stilbenes are promising for managing and treating obesity.Stilbenes, represented by resveratrol, are plant-derived polyketides that have also been shown to prevent or slow the progression of a wide variety of diseases, including cancer, cardiovascular disease, and ischemic injuries [ 5.
6 hours ago · Stilbene is a class of natural polyphenols that can construct complex oligomeric structures [ 1 ].Natural stilbenes have been a hot research topic due to their intricate structures and diverse biological activities. Although their molecular backbone consists only of 1,2-diphenylethylene unit.SUMMARY Stilbenes are dibenzyl polyphenolic compounds produced in several unrelated plant families that appear to protect against various biotic and abiotic stresses. Stilbene biosynthesis has been well described in economically important plants, such as grape, peanut and pine.
However, very little is known about the biosynthesis and ecological.Plant phenolics are mainly classified into five major groups, phenolic acids, flavonoids, lignans, stilbenes and tannins 54-56. Phenolic compounds generally possess one or more aromatic rings with one or more hydroxyl groups.
Overview. Overview Information Okuda, H., and Kubo, M. Effects of stilbenes isolated from medicinal plants on arachidonate metabolism and degranulation in human polymorphonuclear leukocytes. J.
List of related literature:
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from Plant Propagation by Tissue Culture: Volume 1. The Background | |
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from Medicinal Plant Research in Africa: Pharmacology and Chemistry | |
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from Principles of Soil and Plant Water Relations | |
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from Plant Growth and Development: Hormones and Environment | |
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from Early Flowers and Angiosperm Evolution | |
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from Introduction to Plant Biotechnology (3/e) | |
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from Cold Tolerance in Plants: Physiological, Molecular and Genetic Perspectives | |
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from Physiology of Woody Plants | |
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from Phytochemical Methods: A Guide to Modern Techniques of Plant Analysis | |
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from The Physiology of Vegetable Crops, 2nd Edition |
91 comments
All you do is circumlocute without explaining how varying oxidation states of manganese have a role to play, like how its manganese which gets sequentially oxidized and passes on an electron to tyrosine, an immediate donor and how electron hole created in Mangnese is filled up by electrons acquired by splitting of water. Pertinently no reference is awarded to lumenal accretion of protons,ultimate driver of proton motive force
This is really helpful and easy to understand thank you so much
we have to go shopping for COVID 19. Too bad, we can’t eat the sun!
The oxygen evolving complex (OEC) of photosystem II is irreducible complex.
http://reasonandscience.heavenforum.org/t1583-the-oxygen-evolving-complex-oec-of-photosystem-ii-is-irreducible-complex
I’m surprised to see how much the safety of all chemical processes has Evolved since 20112. doing such manipulations with so few means of protection would cause my laboratory manager to have a stroke. thanks for this demonstration.
u are full of energy!!! I hope u can show more this kind of video!! I also can learn a lot from video! I hope someday that i can be good at my experiment skill as same as u. thank u so much! btw I am a master student from Taiwan so i very prefer ur video like this!
what about the efficiency of the resonance energy as the photosystems oscillate the photosystems are undergoing a damping oscillation where energy eventually comes to a nil amount. hence it has to be done within a particular damping cycle so what would be the efficiency of the entire process?
Who else is watching this in the last week of school because their teacher left plants till the very end
Like my comment so I can get a reading of how much people are watching because of teachers.
yo bois,i think this is a great opportunity to make a new bioligy vid because we have to stay home and it gives you more time to make it.
mae mia como lo calsa este video pa bioquimica!!!!!!asi m entero de toooooooooooooooo
why aren’t plants just black then; because this means they would absorb much more light?
drop a like on this comment if you are watching this because of covid-19
Very interesting never knew there where were more types of chlorophyll than just A and B! And F, while relatively new (or rather newly discovered) sounds fascinating.
Who is here because of corona and you have to stay home
Can you do chemosynthesis please it’s so confusing to me
I find it fascinating that there is a chlorophyll that can absorb infrared and that it isn’t more common since infrared is a common “colour”.
i just like that all plants are made of mostly strung together sugar.
but i am a fan of Photosynthesis and its byproducts.
Hi, this video helps a lot, but I just had one quick question I was hoping you could answer. So, in this process, hydrogen ions are a product. But how do they exist in the cell? The oxygen covalently bond to each other to become stable but what happens to the hydrogen ions? Thank you for your hep
who else is here because Coronavirus has made all of us be homeschooled?
In the video in 1:30 some seconds later you can hear a kid shouting.Does everybody here that or only I here the kid shout.
no offense but they look like female version of patrick star… they are cute tho:3
coronavirussends us to home school
the teachers send us to this video
then finally the Amoeba sisters get 616K subscribers!
wow the world is messed up!
This video was good, especially good because I hated my high school biology class
my bio teacher is soo bad that by association i get irrationally mad watching these videos, but you’re doing a great job informing the world Amoeba sisters:)
So, if for some reason my teacher reads this comment. Will I get extra credit for being one of the few kids who actually watched this?:v
Damn I thought I was the only one on this vid since the corona made us homeschooled
Chlorophyll molecules, or as I like to call them, little christmas leaf cookies
Woh this video is not better animated than the updated videos but I like the voice of the sister who is saying
This video is so fascinating. I wish I had an explanation like this before in biology class.
sadly we are throwing too much co2 out there for the plants to feed on lol
Which components of photosystem II are involved 4-electron reactions?
Good content. I was able listen to this youtube on 2x speed and still legible. Only improvement is to have a kind of summary of sorts maybe; how one can estimate balance?
mum: this isn’t science this is cartoons, sTuDy FoR YoUr SciEnCe TeStS
me: tHiS is ScIeNcE DuH
mum: Go to your room for saying DuH
This was funnier in my head
Like this for no reason
Thanks a million for this precious animation:DBut hey, at 1:16 you say that P680 is a special pair of Chl molecules. I am confused. Because albeit my book (Voet and voet) agrees with you but the wiki article on PSII doesn’t. It explicitly states that”…Unlike the reaction centers of all other photosystems which have a special pair of closely spaced chlorophyllmolecules, the pigment that undergoes the initial photoinduced charge separation in PSII is a chlorophyll monomer. Because the positive charge is not shared across two molecules, the ionised pigment is highly oxidizing and can take part in the splitting of water.”
these guys and bill nye are the two horsemen of science teachers favorite educational video
outstanding video! This is indeed the best place to learn biology. Amazing animations.
8:28 who here realized that they just insulted “Plants vs Zombies”
Can someone explain to me the thermodynamics of photosynthesis? I’ve never understood how it could naturally happen on its own because it seems to go contrary to entropy. I guess my question is this, does photosynthesis increase entropy?
Nice video is always best.,
Plants r like little nuclear reactors…lol, If only, we could all use n share power for ” free ” n without harm to the environment!!!! Hmmmm… One day hopefully we may all work together on this…!_!
I learned that Xylem is found carrying water through out the vascular plant.
who ever creates these videos and post them on youtube are amazing. without these videos in their series i would be lost. only thing i wish is that they had videos for everything in my book.
Hi this is a link from a power point of one of my lectures. Does this vid have sound cos I don’t have any headphones with me
i love biology i wish this video was longer and more indeth but still great video
Indeed fascinating! However, you left out one really fascinating aspect of photosynthesis, namely that it relies on quantum processes. Maybe something for a future video?:-)
although this video is very helpful for visualising the process, I think it should’ve stated that for the full reduction of Qb, 2H+ are required, coming from the stromae of the chloroplast. It actually shows in the video, but no remarks are made about it.
Thank you, studying this from a textbook is difficult to visualize.
This clears everything up.
Thank you very much i am preparing for biology olympiads and in my counrty there isnt any good information like animations about the photosystem 2.That was an awesome one thanks!
Very helpful for freshing my mind up for my oral exam tomorrow:-)
So, this is timely. I’ve making a video that includes some photosynthesis, and you covered something that I have chosen to gloss over, because the mechanism is not overly important to the story and I was wasting time trying to understand it. Anyway, photosystem II produces ROS, which goes on to damage photosystem II. But from what I’ve read these damaged photosystem II then produce larger quantities of ROS. Do you know if there is there a know chemical pathway for this increase in ROS production, or do we just know that damaged PSII produces lots of ROS?
Cheers, and great video!
its insane what it is. its manipulation of a natural resource that isnt going away anytime soon. also is it possible to make other organisms to be able to photosynthasis.
please i need this explanation writed down!!. lol… or maybe someone could tell me were i can download this video!!!.. that would be really helpful!
Back in the day I wondered why scientists aren’t trying harder to somehow incorporate the ability to photosynthesize to humans or animals, because being able to create energy and oxygen from sunlight and your own waste products would be Super useful.
content is good, but the animated graphic is dissonant as is her voice and the speed is too fast
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My Kids just love your videos! They get soooooo excited every time I mention the fabulous Amoeba Sis’s.:))
Very informative! Note: There is a bad edit at 3:17, she stumbles on “grapefruit juice” and retakes the line.
Great stuff, it’d be great to learn more about the enzymes that help split water!
How many times has evolution been debunked? How can any educated person NOW believe this NWO garbage. It was God or aliens. Aliens as you know them are just Nephilim and demonic spirits, fallen ones. Jesus IS coming back so ask Him if He is real if do not yet know Him and have faith. Yes, Jesus was raised from the dead.
The part about the modifying chlorophyll and how it could help crops was really interesting
hey jz install IDM u cn download all d videos of youtube..:)
Thank you for the videos within a few minutes and I don’t need to revise 11 chapters by myself❤️
Haha, “Chlorophyl if.”
Excuse me, I shouldn’t have made fun of that.
OmG oMg i LoVe AmEæÅbA SiStErs, YoU åre’r tHe BeSt BetTer ThAn JaKe pAuL…… JuSt kIdDiNg gEt PrAnKeD!!!!!!!!!
So would plants with say, red leaves have a different kind of chlorophyll that can absorb a more red light wave?
Thank you for the video, pictures speak a thousand words, I hope you can put photosystem one and photosystem two together in one video. It would be great seeing the overall process in one video.
Thank you
nice video! Alas, depending on the literature, the dissociation energy of the N≡N triple-bond (looking at you nitrogenase) is higher than that of two H-O single-bonds.
i fel like im not at all feling i want to stay home much loger cus of this
isn’t there supposed to be some quantum mechanics involved in photosynthesis?
This channel is going places. Very interesting, untypical topics!
I would have suggested a different name though. Just this week I watched one of your videos, but when I later returned for more could hardly remember the name and it was almost impossible to find again.
A bit off topic but do you have any new thoughts on Scottish independence noq that the UK is having a gibbering meltdown and the SNP are heavily gunning for it again?
Fascinating indeed. I figured that you would’ve been a humanities person rather than a science researcher, given the type of videos do you have produced so far. Fantastic video. I would be happy to see more like it.
Anybody know this question:Why do cactus close their stomata during the day time but open them at night?
thnks for good videothis is an increadably.most usefull and best wy of remembering the stuff in booksi am a medicoi need similar type of animated video lectures in internal medicine and general surgeryif u know any channels i would be thankfull if u refer memy mail id is [email protected] for ur responce
you couldn’t just wait one day, so you can post on my birthday, lol
I enjoyed this video and would happily watch more videos by you on the topic going into more depth.
I find the idea that life could evolve a way to make its own energy fascinating.
What program do you animate with and how long did this episode take?
Excellent, EXCELLENT video Broad range of topics explained seamlessly. Keep it up!!!
If you go to our website, listed in the information about this video, you can see a written version of the narration used in the animation.
I already considered it fascinating, no need to convince me.
(the sun) you when you get an obvious answer wrong on the test. 3:17
For a long time I had plant aversion (we had a whole quarter on it in high school Bio) but this reminded me of all the amazing processes involved with plant life. I loved the video, and yes, photosynthesis is fascinating.
Pah! Photosynthesis sucks.
Just kidding, it’s very interesting. Great vid as usual.
I found this video interesting, but i think even though it does not absorb as much light and also has other roles in the photosystem 2, that beta-carotene is worth a mention in the sprectum with the clorophiles. Maybe a bit biased but i love my carrots.
I wouldn’t go as far as to say that it’s fascinating……but certainly intriguing.:D
It looks like it was made in Microsoft paint but hey, it looks good.
I got an A in microbiology all thanks to you sisteroos. Thank you so much sisters!
Awesome video. Learnt a lot. And photosynthesis is fascinating! And also, a long word.
Whilst I’m always more inclined towards animal biology I will take my hat off to photosynthesis and concede that in that respect, they do perform better than animals!:) Also absolutely spotless animation!:D