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treva

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Everything posted by treva

  1. If its 'male only' that means its got to be on the Y chromosome, right? Not alot genes are typically found on the Y chromosome, those that are are mostly involved in the development of male genitalia in the fetus. I think this hole 'genetic basis of intelligence' is the biggest scham ever. Obviously theres alot of enviromental factors that contribute to the development of ones intelligence, and its bad science to try and narrow it down to simply a genetic element.
  2. To be specific, my favorite micro-organism is probably Plasmodium sp. My least favorite is any herpesviridae because they are a PITA to study
  3. Thats insane. How do you contain 510 million degrees celsius!
  4. Sex drive is innate. Its built into our biology via specific areas of our brains and hormones.
  5. Well, that just put my foot in my mouth haha....
  6. But it all starts with a growth factor binding a cellular receptor. This initates a cascade that eventually leads to the synthesis of proteins involved in DNA replication and mitosis.
  7. Speciation in prokaryotes is based more off then just DNA sequences. Even though yeah you have lots of DNA polymorphism within bacterial species, that one species will exhibit all the same physiology, for example they will all prefer to grow in the same microenviroment, produce a majority of the same enymes, have almost identical morphology, etc etc. Besides even if you get a point mutation in an enzyme (that would ultimatly lead to a decrease in DNA homology) that enzyme is still going to be conserved in function among the species, if it wasn't theres a good chance that bacteria might die. I believe bacterial DNA polyermase also has a lower fidelity then Eukaryotic DNA polymerase, so more mistakes = more mutations = less homology.
  8. Hence, 'better yet drink water' Personally, I'd take my chances with apartame then massive ammounts of sugar. I know, it probably can't be good for me but at the same time there has yet any significant evidence linking it to cancer. A high sugar intake on the otherhand, can lead to diabetes and other health problems related with high cal intake. The lesser of two evils, I suppose
  9. Just an FYI, blood cells are about 6 microns in size, if I recall correctly.
  10. Drink diet. Better yet, drink water.
  11. Yeah but fire isn't a chemical, rather a release of energy
  12. Immunology, with a liking in the feilds of parasitology and virology. Why? Because everyone gets sick!
  13. Considering viruses complete their life cycle by hijacking your own cellular machinery and using it for their own benefit, and considering the fact that if a cell recognizes it is infected with a virus it will sucide (assuming the infected cell isn't killed by your immune system first), and also considering that infected cells can have up to 1 million viral particles inside them, oh yeah and also considering the fact that for some virsues the only way they can get out of the cell after assmbly is by blowing it up, what exactly is a 'harmless' virus? Also viri isn't a word pertaining to multiple virus particles - its viruses. A few cool facts- One of the microbes used to make yogourt is also present as part of the normal flora of the human vagina. Bacteria and other intestinal microbes may consititue up to 50% of the mass of fecal material.
  14. 1) Media sensationalizes stories, because if stories were boring no one would read them. However as long as Humans are in existance there is the possibility that there can be a massive outbreak of disease killing a large # of us. Personally I think 150 million is a very small number of people to die from a 'deadly' infectious agent. Some pathogens (like small pox) easily kill 20+% of the people they infect. Assuming the worlds population is still at 6 billion (probably an underestimate) and assuming 25% of the worlds population gets exposed to this pathogen (also probably an underestimate) thats 450 million people who will probably die. 2) Ali you are a very shallow person.
  15. YT how old is your daughter? Women who are pregnant and breastfeeding are thought to be more susceptible to diseases (they enter a state of immunosupression) then men and women who are not pregnant or not breast feeding. Also, children usually have weaker immunity then adults simply because they haven't been exposed to the wide variety of potential pathogens then a person of an older age (obviously, because they have been living longer) so they have less memory. When you've been exposed to a pathogen before you have pretty good antibodies to neutralize it that were a result from the first infection, and upon secondary exposure your body makes even better antibodies to the pathogen then were initially present, and this continues each time thereafter you are exposed to the immune system. Biting your nails could have something to do with it, but it also comes down to hygenic practices as well. Washing your hands on a regular basis is probably the best preventitive measure in avoiding disease. Also you could be genetically predisposed by your genes to fight off infection better then your wife or child. Not all immune systems are created equally, some are much better then others at fighting off disease without causing autoimmunity. Any drugs your wife or daughter are taking could also affect their immune response. So basically, theres alot of factors lol.
  16. Do you mean why are muscular contractions mediated by calcium?
  17. 1 is more active then the other, you really only need 1 to produce your sperm so you really only use 1, which is why it is larger. The other one is an evolutionary backup plan.
  18. Wood is basically a differently assembled form of cellulose. I can't remember the exact chemical linkage details but if you added the word cellulose to your search I'm sure you'd have more luck.
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