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  1. Discussion of Darwin's theories, modes of natural selection, life form structures, and life off Earth

    • 2.3k posts
  2. DNA replication, Mendelian Genetics, mechanisms of gene expression, and related topics

    • 1.1k posts
  3. Population biology, group behaviour, ecological interactions, environmental and biotic concerns.

    • 961 posts
  4. Discussion of protein structure, energetics, and molecular biology.

    • 553 posts
  1. Guest timbms
    Started by Guest timbms,

    What do you think about the concept of integrating computing technologies with life sciences and healthcare applications? A web-based magazine called OBBeC.Com ( http://www.obbec.com ) covers the horizons of this concept, since bioinformatics has showed us all what we can achieve in modern genomics and molecular biology through the use of computing technologies. But I do wonder how far can we go with this concept in life sciences and healthcare. What I like about this magazine is that it actually does cover this concept beyond just bioinformatics. What do you guys think about this concept?

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    • 3 replies
    • 1.9k views
  2. Started by wonder,

    should i add EtBr in the gel solution, when i run the mRNA? thanks!

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    • 4 replies
    • 1.9k views
  3. "Blood solutes affect the water potential of the blood, and thus the water potential gradient between the blood and the tissue fluid. The size of this water potential gradient is largely due to sodium ions and plasma proteins. The blood solute level regulates the movement of water between blood and tissues." Above is the description from my bio book. What does it mean by: 1. Water potential 2. tissue fluid, is it plasma? What do the sodium ions and plasma proteins affect the gradient? Does the whole description mean that the water moves by osmosis to balance the concentration between tissue and blood solute? does "regulate" mean "move"? Albe…

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    • 12 replies
    • 3.3k views
  4. Started by Munchie,

    What tests can be done to get the effects of mycorrizhae on plant roots..... any ideas?!i have a lab!

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    • 18 replies
    • 5.6k views
  5. Started by Primarygun,

    When we use high-power lenses, the image goes dimmer, why?

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    • 11 replies
    • 2.7k views
  6. Started by Primarygun,

    How do scientists classify the structures of a cell into living and non-living? Cell wall is non-living, while chloroplast is living. Does the word "living" implies "life" or carbon structure?

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    • 7 replies
    • 2.3k views
  7. Guest naren11
    Started by Guest naren11,

    I couldn't get the exact info on: acid/base foods and their affects on our human body + (pH). Also, consider alkalosis and acidosis And what would the food ( acid and base) be after metabolized? Thxz

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    • 1 reply
    • 1.2k views
  8. Started by Munchie,

    im doing Biology at uni....need to pick suttin that i have to actually do as a practical....and i have to pick suttin quick! i want to do it on insects or the effects of insects on plants etc. any ideas people?! noting that i have to actually do this practical in the next few weeks!!!!

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    • 8 replies
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  9. Hello, right now I am in need various bacterias in order to perform my science experiment, I am looking for a good online supplier that can be trusted and offers relatively cheap prices of microbiology products. I am looking for E. coli K12, lactose, glucose, maltose, and dextrose agar. (Is it viable to simply get a bottle of raw agar and add custom nutrients?). Also what do ya call it... the thing used to streak plates. But anyways.... help would be appreciated Edit: I live in ohio, USA

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    • 3 replies
    • 1.3k views
  10. Started by 5614,

    are humans man made or natural??? we are made by humans [our parents]... but we are living organism, so we are natural... so... are humans man made or natural???

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    • 7 replies
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  11. Started by Tommyknocker,

    Hi everyone, I'm new here, and look forward to partaking in some interesting discussions. To be honest though it is this stupid question that drove me to find a forum so I could ask what the answer should be... it doesn't really make sense. "Why don't animal cells suffer from plasmolysis?" Now I know plasmolysis is when a plant cell loses water to its surroundings due to osmosis, but doesn't this happen to animal cells too?

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    • 7 replies
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  12. Started by Primarygun,

    I am curious of how cells can store food as granules, how cells can absorb water,how nucleus can control the cell activities and how would the glucose store in one cell. Can everyone tell me? Moreover, I want to question about whether xylem has cytoplasm , cell membrane or mitochondria.

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    • 3 replies
    • 1.6k views
  13. Started by alext87,

    Do cats and dogs have a clitoris?

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    • 10 replies
    • 3.6k views
  14. Started by amoda,

    Hi, i was wondering if you know any really weird plant experiments. Not normal experiments like "Effects of diffrent ph levels on pea plants " or "What happens to plants if planted up side down". One of my friends came up with a nice experiment which he decided to do himself "Effects of a magnetic field on pea plants". Do any of you know any tests like that? Thanks for any help!

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    • 21 replies
    • 6.6k views
  15. Guest Druid
    Started by Guest Druid,

    I am learning about steady state systems and have a problem which is really stumping me. The Question Taken from John Hartes "Consider a Spherical Cow" is as follows: Consider a forest in which the residence time for carbon (ignoring respiratory pathways) in the living trees is 15 years, in leaves is 1 year, and in woody parts (including roots) is 100 years. (a) What is the ratio of leaf biomass to wood biomass? (b) What fraction of total Net Primary Productivity (NPP) does wood productivity constitute? Biomass = NPP * Residence Time Any assistance would be greatly appreciated in figuring out the steps to this problem.

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    • 0 replies
    • 1.2k views
  16. Started by NavajoEverclear,

    Well i only use diatoms cause their pretty, and cause of their shells leads me to believe they are durable, and will survive better. Perhaps there is a better candidate for my proposal. My proposal is that we spend great effort on figuring out how to encode DNA, so that we are capable of creating small mechanisms for reading and copying the code ( i know enzymes do this, but for my purpose we may need more than what nature has given). When we have these capabilites, we than design diatoms to carry and copy diverse individual human genomes, and genomes of plants and animals. If anyway possible, to encode messages that can later be deciphered by an intelligent species.…

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    • 1 reply
    • 1.2k views
  17. Started by Thales,

    Does anyone have a link to how to calculate the amount of hydrogen plants make as a by-product of photo synthesis? Either that or which plant is the most efficient at this?

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    • 21 replies
    • 3.5k views
  18. Started by ydoaPs,

    A few days ago I was told that there is West Nile Virus in my county. I just got ate up by mosquitos. They were blue and had stripes. Does that kind of mosquito carry the virus?

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    • 7 replies
    • 1.8k views
  19. I've heard somewhere that plants react differently to different spectrums of light (visible light). Which is more affective for photosynthesis? Red, or blue light? Why does it matter? How does the light actually affect the process?

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    • 6 replies
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  20. Started by soconfused,

    Hello everybody! This is one of the biggest challenges I have ever faced I hope that you have dealt with this matter before and hope that you can give me some advice and help. Thanks very much in advance! the recipe: Sodium phosphate: Each ml contains 276mg of monobasic Naphos (NaH2PO4), and 142mg of dibasic naphos (Na2HPO4). 93 mg of phosphorus/ml = 3 mmol. 92 mg of sodium per ml/23 = 4 meq/ml. Osmolarity: 7000 mOsm/L my problems: a) as the recipe states 1 ml solution contains 276mg of monobasic Naphos (NaH2PO4), and 142mg of dibasic naphos (Na2HPO4). then how come they only get 93 mg of phosphorus/ml = 3 mmol????? It seems like we are dealin…

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    • 0 replies
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  21. Started by toolman,

    Greetings, Just had a thought.. back in the day, when man first exisited, but didnt have a structured language, we used getures, promts to communicate, how did they think in their head? Today we think in our head in spoken language. If you did not speak a language, how would you think in your head? Just a thought..

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    • 35 replies
    • 6k views
  22. Started by toolman,

    Hi, How do colours reflect moods? For example, blue is suppost to calm and relax. Is it based on personaly experience?

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    • 7 replies
    • 2.2k views
  23. Guest TarFox
    Started by Guest TarFox,

    I am looking for the scientific term used to describe the research done on "mythical" creatures such as dragons, chimeras, and unicorns. I found an encyclopedia type book years ago in a public library with the term in its title and I haven't been able to find it or anything on the subject since. Does anyone know what it is? Any help would be greatly appreciated. Thank you.

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    • 3 replies
    • 2k views
  24. Started by ydoaPs,

    Do they really cause cancer?

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    • 36 replies
    • 5.6k views
  25. Started by coquina,

    I'm trying to do this as a poll - got no clue if it will work. I would like to everyone to tell me which is their dominant eye, and if it corresponds to their "handedness". Here is how you do the test: Find a vertical line to sight to - a door jam works well. Extend either hand in front of you with the index finger extended. With both eyes open, align your index finger with the vertical line. Close your left eye and open your right eye - did your finger stay in line with the vertical line? Close your right eye and open your left eye - did your finger stay in line with the vertical line. In one instance, your finger will appear to "jump" …

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    • 25 replies
    • 11.3k views

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