Recent content by madcat8000

  1. M

    Did the First Humans Have White Skin?

    Nope not a misunderstanding, just the fact that at some point the evolution of a species starts with one individual oddball. Kinda like LUCA. http://en.wikipedia.org/wiki/Last_universal_common_ancestor At some point there was most likely one single female that is responsible for humans...
  2. M

    Did the First Humans Have White Skin?

    Being able to interbreed is a defineing attribute of a species. Many people missuse the word species and when one gets to the nitty gritty parts of relatedness its a useless term. At one point there was a single female that was the mother of all homo sapien subspecies and reguardless of the...
  3. M

    Medical Is There Such a Thing as Erythrocyte Cancer?

    Is there such a thing as a cancer of erythrocytes? Just seems like it would be likely to happen but have never heard of such a thing. You make millions of them a day and the last step to maturation is to toss out the nucleus...sure is a lot to go wrong there.
  4. M

    How Similar is Your Y-DNA Haplotype to Your Ancestors?

    And yes it is possible that you might have different markers than your geneitic grand father. However I would bet every single thing on this planet I can lay claim to that you dont.
  5. M

    How Similar is Your Y-DNA Haplotype to Your Ancestors?

    Actually the only thing you have in common with the men on your fathers side is the Y chromosome. Its tiny in comparison with the other chromosomes and has very little information. All the other chromosomes are recombined (mixed between the mother and father)...
  6. M

    Reverce log, Anti-log, or unlog whitch is correct?

    Title pretty much says it, is there an offical opinion that can be quoted somewhere to win a bet? I like unlog or Reverse log but Anti-log just sounds goofy.
  7. M

    Mitochondria - How it functions

    The amount of energy produced by a mitochondria can be a bit quirky, the analogy of water flowing downhill is a good analogy. A trickle of water flowing downhill carrys little pressure and so would produce very little electricty, however a large river flowing downhill would create a great...
  8. M

    Doctor yesterday ask him to do a test about cancer

    I think that the issue is that its probably a rare fungus that might only affect a weakend body. Thus only a very sick person would have the infection. A person whos immune system is loseing the battle could indicate AIDS or cancer of almost any type. But some persons who use anabolic...
  9. M

    Equilibrium constant rules help.

    I was wondering where i could find a source for the rules to find Kc from a chemical formula? My professor tonight was changeing the formula like this: H2+Br2+2HBr then showed that 2H2+2Br2=4HBr...and getting different Kc values for each. I think that this is straight out wrong but she's the...
  10. M

    NASA Scientist claims to have found concrete evidence for extraterrestial life

    Hoover says he isn’t worried about the process and is open to any other explanations. “If someone can explain how it is possible to have a biological remain that has no nitrogen, or nitrogen below the detect ability limits that I have, in a time period as short as 150 years, then I would be...
  11. M

    Basic principles of the different immune cells

    The T-cells that could be triggered by APC's that incidentialy pick up self antigens and present them as forigen will be working alone. They need other signals to proliferate and remain energized. Working alone they will become anergized(they cease to function) from lack of co-stimulation and...
  12. M

    Basic principles of the different immune cells

    Positive selection (MHC Restriction) - acording to Lauren Sompayrac's lecture book titled How the Immune System Works third edition the reason for positive selection is to ensure that only antigens presented by MHC's are recognized by mature T-cells. This ensures that unpresented antigens...
  13. M

    I determining if the quality's of this mole are cancerous

    All moles that change shape, color, or size, should be referred to a doctor within a reasonable time. Skin cancer is much easier and sucessfuly treated when caught early and treatment is initiated immediatly.
  14. M

    OnTime-hormone produced in Epididymis

    Its a pretty witty joke if u have the tastes for it. But just a joke.
  15. M

    Medical Bipolar Disorder: Impact on Interests & Mind - Worried about Courses?

    Well my first discovery about it was that i had delusions about the people around me. Trying to save up the 250 dollars to see someone but I am learning to pull apart the delusions. Just try to remember that its an expression of your emotions that have gotten too strong. I am still scared ill...
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