if the original idea of photodynamic thereapy came from a plant......?
925453
well photosynthesis is a good way to start. the water from the roots are pulled by cohesion and then it leaves from the stroma in the plant leaves.
216851
probably it evolved from seaweed.  and as seaweed eveloved it became grasses, and trees, and plants,and from it all of the vegetaion we see today.
838328
Almost certainly a plant cell.
961932
Probably not. The purpose of photosynthesis is to produce so much food that is not only enough for the plants use, but also there is some left over for other animals too, If plants were to perform photosynthesis at the same rate of cellular respiration, they would only produce enough food that would suffice their own needs.
1068505
No.\n\nSee, the thing is that most animals is that have evolved pigments to stop light penetrating their cells.  A man could have all the grenpigment he wanted and it won't do anything because the interior of the cells will be permanently in the dark.\n\nWith transparent animals like jellyfish or glass fish or similar you probably could achieve some level of autotrophic activity.\n\nIn the case of a highly active animal like a man the payoff wouldn't be worth the cost. Chlorplasts require energy to build and maintain and active animals can't afford to laze around int he sun all day. That's why the ancestors of animals abandoned their chlorophyll in the first place (did you know that all animals are descended from photosyntheic organisms?)\n\nSorry, but there are just too many hurdles to having a photosynthetic man.
410268
A substantial body of scientific research has shown that St. Johns Wort is effective for the treatment of depression  (some studies have shown it is more effective and safer than prescription medications - SSRIs).\n\nEvery therapy has potential risks.  As for the photosensitivity noted by another 'answerer', this appears only to be an issue in animals and not in humans with reasonable doses.  A research study on this issue at the University of Freiberg, Germany published in the medical journal "Phytotherapy Research" in Feb. 2003 found no potential of phototoxicity in humans with daily doses up to 1800 milligrams.\n\nPlease note, if you have a serious enough problem to feel you need medicinal intervention (including herbal therapy) it might be a very good idea to work with an experienced health care professional.  They can guide you with dosages and other appropriate advice.\n\nBest wishes and good luck.
152296
Phytagoras HIMSELF! the man!\n\nI think he did it while trying to find a scientific explanation on why did theif folks gave him that name.
192285
If you want me to use those specific terms it sounds like you're going to just copy what I write for your assignment.  I'd be happy to explain the process to you, by I'm not going to write your homework paper.\n\nThe idea is that plants produce food using energy from the sun, and all other life either directly eats plants or eats things that eat plants.  So all life (except some protists, that, like plants, can make their own food) lives on energy that the plants have harvested from the sun.\n\nI hope you already know what the laws of thermodynamics, photosynthesis, and respiration are.  If not, pay more attention in class or look them up on Wikipedia.  You should be able to figure out how to phrase the explaination in a way that uses those terms on your own.
959945
The endosymbiotic theory concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria.
932165
I would say it is the leaf of a plant or the plant itself.  The leaf gives off oxygen (the waste product) during photosynthesis.\n\nOr: (I grabbed this off Wikipedia)\nphotosynthesis uses water as an electron donor which is oxidized into molecular oxygen by the absorption of a photon by the photosynthetic reaction centre.
945352
Then defend it... I say that there is no way that a random chance process could have formed life forming proteins and DNA with their unique chirality. If proteins and DNA were formed by chance  each and every one of the components would be a 50/50 mixture of the two optical isomers. This is not what we see in natural proteins or in natural DNA. How can a random chance natural process create proteins with thousands of "L" molecules, and then also create DNA with billions of "R" molecules? Does this sound like random chance or a product of design? Even if \nthere were a magic process to introduce chirality, it would only create one isomer. If such a process existed, we do not know anything about it or how it would work. If it did exist, how were compounds with the other chirality ever formed? Even if there were two magical processes, one for each isomer, what determined which process  was used and when it was used, if this was a random chance natural process? The idea of two processes requires a controlling mechanism, and this kind of control is not possible in a random chance natural process.\nYou are an intelligent man alot smarter than a mere theist so I don't think I need to explain chirality more thoroughly. You just need to defend your statement... Too bad you can't now that you have this informant ion.....   Jim
122360
design it just like any other plant, however this is realyl complicated.  I bet you 10 points nobody answers this correctly.
832973
Hi:\n\nMiller's experiment did just that... produced organic matter from inorganic matter, simulating the primitive conditions. What is believed to have happened after that is difficult to simulate as it was a random process of associations of the various organic compounds to form primitive complex structures, like say even catalytic RNA. This would have taken millions of years in itself and is difficult to reproduce in vitro.\n\nIf it is of some consolation to you, scientists have created a virus from scratch, about a year ago and the results were published in Nature.\n\nCheers!!
967989
I remember a girl in the news who ended up inhaling a piece of the X'nas tree and ended up getting a horrid asthma attack.  For years she lived with it until she was operated on about 10 years later.  After extracting the snall twig the leaf parts still had chlorophyll in it.
53124
At the speed of light... than the chloroplast from the plant turn it into energy
996758
Most likely through photosynthesis. Billions of plants can't be wrong.
421068
Well if I remember this right...NASA was doing experiments a few years ago with rhubarb and pumpkin plants. The C02 oxygen exchange was the greatest. Also there was something about a genetically engineered algae they were trying out