Have any biology related questions?

Discussion in 'General Discussion Forum' started by PaladinHeart, Oct 10, 2010.

  1. PaladinHeart

    PaladinHeart Mildly Dipped

    563
    Jan 20, 2004
    There seems to be some pretty smart people here, and they need some traffic, so I thought I'd advertise for them a little.

    http://biology-forums.com/index.php

    They want any and all of your biology related questions, whether it's to help you with biology related homework or whatever. There's even a section where they offer to diagnose you if you're sick and tell them all your symptoms.
     
  2. The Dutch Ghost

    The Dutch Ghost Grouchy old man of NMA Moderator

    Jan 11, 2004
    Somewhat biological related, why is freezing damaging to cells?
     
  3. SkuLL

    SkuLL Chad McRealman Orderite

    Sep 6, 2009
    Good resource to know... but I can't think of any questions right now :(
     
  4. Dead Guy

    Dead Guy Senate Board Director oTO Moderator Orderite

    Nov 9, 2008
    Because when water freezes, crytals are formed, and those crystals can damage the cells membrane. Thus when you thaw the cells, their integrity is compromised, and they will leak, disturbing the balance of ions intra vs extracellularly.

    For this reason you cryopreserve cells in a solution containing DMSO, which is toxic but has properties preventing the formation of crystals that damage the cells.
     
  5. DexterMorgan

    DexterMorgan A Smooth-Skin

    647
    Aug 6, 2008
    Water forms spiky ice crystals which expand and pierce cell membranes. Flesh turns to mush.
     
  6. PainlessDocM

    PainlessDocM Sonny, I Watched the Vault Bein' Built!

    Feb 5, 2010
    Why does sporting accelerate neurogenesis?
     
  7. Dead Guy

    Dead Guy Senate Board Director oTO Moderator Orderite

    Nov 9, 2008
    That's not my field, so I'm not sure, but as far as neurogenesis unrelated to neurons that are involved in the control of the muscles used in said sporting, I don't think there's any clear evidence for a mechanism yet.

    The muscles used will get more neurons connected to them, and I think there are also changes in the motor cortex as your control of a muscle increases. I don't know if that's existing neurons making new connections or if formation of new cells is involved.
     
  8. DexterMorgan

    DexterMorgan A Smooth-Skin

    647
    Aug 6, 2008
    I'm not 100% certain but I think it has to do with the fact that exercise causes tearing in muscle tissue which spurs growth of new muscle fibers and, along with those, new nervs.
     
  9. Mr Fish

    Mr Fish Snug Rubber

    Sep 11, 2010
    Hmm. Serious discussion ey? :|
    Where do babies come from? :shock:
     
  10. Dead Guy

    Dead Guy Senate Board Director oTO Moderator Orderite

    Nov 9, 2008
    Most of them come from India and China, I beieve.

    Or perhaps you were wondering how is babby formed?
     
  11. John B.

    John B. Look, Ma! Two Heads!

    389
    Sep 24, 2010
    There is a special place for babies to be born and all women have one, that's all you need to know.
     
  12. Puokki

    Puokki Where'd That 6th Toe Come From?

    471
    Jun 4, 2008
    *BEEB* Off-topic warning! Let's get back on tracks with:

    Is there any way to prevent catching a cold here in cold, dark and depressing Finland, other than staying home?
     
  13. DexterMorgan

    DexterMorgan A Smooth-Skin

    647
    Aug 6, 2008
    Don't know, but I do know this pic is awesome:

     
  14. SkuLL

    SkuLL Chad McRealman Orderite

    Sep 6, 2009
    I learned that you can't catch a cold on really cold days (below zero), because it can't survive in the air.

    I also heard that you can catch a cold only when your nose is cold (i.e. you could wear as many jackets as you want, if your face is freezing, you can still catch a cold).

    I don't know if I can safely rely on either of those facts :)
     
  15. Murdoch

    Murdoch Half-way Through My Half-life
    Orderite

    Nov 24, 2003
    The most likely place to catch a cold is anywhere near someone with a cold. It's mostly independent of weather and season, statistically, only correlating with the cold at all because our noses run more.

    Best thing you can do is not get stressed out or otherwise immunocompromised. Second thing to do might be to suck on zinc lozenges; supposedly the zinc coats your airways and inactivates viral particles. Third thing to do is get a flu shot, as protection from flu tangentially protects you from a cold by reducing the possible infections that may reduce your immune status, allowing better defense against rhinoviruses like the cold.
     
  16. Dead Guy

    Dead Guy Senate Board Director oTO Moderator Orderite

    Nov 9, 2008


    You could also snort Interferons like Tony Montana, but it's quite possible it doesn't work.
     
  17. babadook

    babadook Lived Through the Heat Death
    Orderite

    Apr 2, 2005
    I have heard that you can can still get viruses though since they have special properties making them survive almost any condition (apart from serious heat?) putting them into hibernation, just to re-awake in the right condition again (as in, inside a body).
     
  18. Puokki

    Puokki Where'd That 6th Toe Come From?

    471
    Jun 4, 2008
    It's funny because it's (almost) true.