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RyanJ

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Everything posted by RyanJ

  1. Great! Thanks for the information - again it has no real use its just out of pure interest Cheers, Ryan Jones
  2. Right, thanks all - so there are no limits but they are all but useless inmost cases! What about negative bases them? Would they be premitted? Quantum computers are going to be a big thing when they come put, much fastr and far more powerful. Can't wait! Cheers, Ryan Jones
  3. RyanJ

    Mt. St. Helens

  4. RyanJ

    Books

    Not yet, it is any good? if its good I'll buy a copy have a read! Cheers, Ryan Jones
  5. Ah, right I see. I'm guessing it does involve both a chemical timer and a hormone - it makes sence. In mitosis anyway because hormones are released during the teen years that make the body grow and change a lot. And then again when you are younger the same hormones are not present but the cells still replicate pointing to the conclusin they have a clock mechanism Cheers & get your 1,200 posts back Ryan Jones
  6. 'll see if I can help witut giving you the answer. Another enzyme called carbohydrase breaks down carbohydrates. With an increase in temperature the molecules will have more energy and so will move faster - you can workout the bit that goes here. When the temperature of the substance exceeds a certain point the weak hydrogen, disulphide, hydrophobic and ionic bonds within the structure of protein will start to break and it will denature. Add a "why" statement here and explain it. 2) This one is a little more trickey. You'll need to look at the effects of things like pH, temperature, concentration of enzyme and of substrate, etc. Explaining each of the factors and what an effect a high or low ammount of each would do to the enzyme and why. Also, for this one the answer must be no because some bacteria can survive at over 100 degrees C which means ther enzymes are much stronger than ours - why is for you to solve! 3) Seeing as enzymes are proteing they are not alive therefor when the cell dies the enzymes cna continue to funciton for a period of time untill the conditions inside the cells becaome to severe. Explain this to get you answer. Cheers & Good luck, Ryan Jones
  7. Indeed because it normally takes more energy to extract the rimary product (e.g. oil in the case of plastic) than it does to melt the plastic and reshape it. Cheers, Ryan Jones
  8. I suppose a centrifuge could work to seperate out the strands with different masses, not shure how good or even if it would work correctly though. Cheers, Ryan Jones
  9. Yea, the list of stuff we can recycle here gets bigger every week but right now things like batteries ned to be taken to a specialist, things like TV's, monitors and the like are also recyclable now too at the store. They even ask for the hedge clippings and cut grass so they can make fertiliser out of it... Thats just nuts but effective. Also, all the litter picked up (Or as much as possible) is now sorted and recycled too... They say the hardest types of things to recycle are actually plastics because two pieces of plastic look the same but are totally different, this causes a lot of problems when you try to recycle thhem together. I think they are working on some sort of bacteria that breaks the plastics back down to parts that cna all be recycled at the same time, this will be interesting to see! Cheers, Ryan Jones
  10. Hi everyone! This has been annoying me for a while now, you can have things like base 8, base 6, base 2, base 10 but how about something like base 2.5 for example, would that be valid? (Probably useless but there we go!) Also, would a negative base be valid and would an irrational base be valid too, such as base Pi for example? Cheers, Ryan Jones
  11. Another way to save nature - recycle! In my area they have started a recycle programs where we put special types of rubbish (e.g. plastic, glass, cans etc.) into seperate bags which are then collected and recycled. Anyone else have something like this in their area? Also, why don't they recycle batteries and the like? They must be able to do something with them shurly. Cheers, Ryan Jones
  12. RyanJ

    Books

    Maths is fun! Although most people would argue with that. I'm currenty looking through the CRC Concise Encyclopedia Of Mathematics and thats one hell of a great book, just about everything in there! Other than that I'm reading a book on the Golden Ratio and another on Pi and Irrational numbers. Cheers, Ryan Jones
  13. 1) No idea realy, depends on thee xperiment. List factors that directly affect the results - how its made a fair test, what factors are kept the same and changed etc. 2) Try these: http://en.wikipedia.org/wiki/Plasma_membrane http://en.wikipedia.org/wiki/Lipid_bilayer http://en.wikipedia.org/wiki/Phospholipid (Most of the stuff here is probably above what you'll be tested on!) http://www.sirinet.net/~jgjohnso/apbio5.html And some images may help too... http://images.google.com/images?&q=%22plasma%20membrane%20structure%22&btnG=Google+Search&sa=N&tab=wi 3) http://en.wikipedia.org/wiki/Chloroplasts http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/L/LightReactions.html http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chloroplasts.html And images: http://images.google.com/images?q=%22chloroplasts%22&btnG=Search Once again, good luck If you have any actual questions you may also try positng those, I'm shure someone here can help you with them! Cheers, Ryan Jones
  14. This may help for #4: http://images.google.com/images?svnum=10&q=%22membrane+transport%22&btnG=Search Or for more information on transportation (The 4 methods of) that may help with diagrams: http://en.wikipedia.org/wiki/Osmosis http://en.wikipedia.org/wiki/Diffusion http://en.wikipedia.org/wiki/Active_transport http://en.wikipedia.org/wiki/Facilitated_diffusion Cheers & good luck, Ryan Jones
  15. Isn't that the whole idea? To learn something you did not know before? It would be pointless asking a question if they knew everyone would be able to answer it with no research or applicaiton of knowkedge. Only 30% of my Biology exam is pure learning the rest is applied knowledge and research. If you don't understand the material keep reading it until you do understand it or look for a better reference. A good research resource is here: http://en.wikipedia.org/wiki/ Cheers, Ryan Jones
  16. Not really, I can reshape a piece of metal by filing away one of the edges and that would have changed the shape of the metal and thus reshaped it! Anyway, your probably right I should have put altered the shape though removal of part of the lens thus altering the way it focuses light and removing or reducing the bluring effect. It should also be noted that shining lazers into someones eye is not a good idea unless you know what your doing... you can really damage the cornea if you do this. The lasers they use in medicine have a set wave length that is absorbed only by the dye they use and so it will not acceft the eye with no dye on it Another porblem with this is you normally only have one chance, if you take too much off you can't put it back... Cheers, Ryan Jones
  17. Great Description Dak, it helped a lot! If they even find an enzyme that could act like DNA plymerase but could copy all the way to the end of the chromosome then what difference would that have? So' date=' are they caused by something like a hormone or, by a "chemical clock" inside the cell? Both can still apply but I'm guessing that it varies in different curcumstances. And congradulations on yout 1,200[sup']th[/sup] post! Cheers, Ryan Jones
  18. Again, same problem - its not specific. Long sighted, Short sighted and things like cateracts can all cause blurryness. Lazers cna be used to reshape the lense so it can focus correctly that could potentially correct the Long and Short sighted problems and the cateracts can be "burned away" using a lazer and thus fixing that! Cheers, Ryan Jones
  19. Hi there everyone! I have two questions. After talking to my biology teacher about something not even related to this we some how ended up on the topic of ageing and how the "sticky" ends of the chromosomes are not correctly coppied. If [acr=Deoxyribonucleic acid]DNA[/acr] is supposed to be error checked while the base pairs are being matched up then why are these ends not always correctly copped as most of the other [acr=Deoxyribonucleic acid]DNA[/acr] is? Is it because humans are designed to age in this way or is it a flaw in the way the [acr=Deoxyribonucleic acid]DNA[/acr] replicates? Also, how do cells know when to start meitosis, do they have some sort of inbuilt timer or are they driven by horemones or a combination of the two? Thanks for the help, Ryan Jones
  20. It does make sence but if they are damages exercise will do them no good. If you tear a muscle and then try to excercise it you'll probably do more damage and good and the same probably applies here too. I have bad vision and numerous vision problems but glasses correct them for the most part, your idea could work in certain conditions but you failed to state which type of eye problem it would be targeted at Cheers, Ryan Jones
  21. A fussion engine is not considred neither an ion nor a rocket drive. Cheers, Ryan Jones
  22. Only objects with zero mass can travel at light speed because of the effect given by [math]E=MC^2[/math] which gives particles something called 'rest' mass, because some of the energy constitutes mass and as you arrpoach light speed more and more energy are needed to propell the object the closer you get. To travel at light speed with any body with lass you'd need an infinate ammount of energy and so would have and infinate mass thus preventing you reaching light speed. There are quite a few recent threads that deal with the speed of light which you cna see a few listed below: http://www.scienceforums.net/forums/showthread.php?t=15591 http://www.scienceforums.net/forums/showthread.php?t=16491 http://www.scienceforums.net/forums/showthread.php?t=16421 http://www.scienceforums.net/forums/showthread.php?t=16509 http://www.scienceforums.net/forums/showthread.php?t=16441 I also suggest you lookup some of the concepts in Wikipeda.org - it should help you too understand them! One other thing to note, even a massless particle cannot travel faster than light - you'd need a theoretical particle called a tachyon which most people believe not to exist. Cheers, Ryan Jones
  23. Or loads of devices simmilar to light bulbs.... All you need to do is make enough electricity to strip some electrons from and atom and then use a magnetic field to compress the beam and make it hot. That exactly how they are trying to fo nuclear fussion too! Cheers, Ryan Jones
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