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[Biophysics] Re: Structure of nucleus of amoeba

r norman NotMyRealEmail at _comcast.net
Sun Mar 26 13:58:18 EST 2006


On 26 Mar 2006 10:04:27 -0800, NeoJeet at gmail.com wrote:

>
>r norman wrote:
>> On 22 Mar 2006 07:16:42 -0800, 0AbhiJeet at gmail.com wrote:
>>
>> >I am searching for info on detailed structure of amoeba or any
>> >protozoa. I would like to know which elements of nature constitute
>> >nucleus, moleculer structure etc.
>> >
>> >Aim is to figure out what makes that nucleus to 'feel' hungry and look
>> >for food and how does it know what is food i.e energy. Human brain is
>> >too complicated to study this.
>> >
>>
>> The behavior of a single celled creature like Amoeba or Paramecium or
>> whatever is usually controlled by cytoplasmic factors like nutrient
>> concentration and levels of specific signaling molecules.  Looking
>> into the structure of the nucleus won't help.
>>
>> There are many aspects of protistan behavior that are completely
>> explainable on the molecular level.  For example Google on "Paramecium
>> avoidance behavior" or, on a very technical level, read the De Ondarza
>> et al. paper on G proteins and Ca++ influx at
>>   http://www.uvm.edu/~biology/Alumnews/JEM2003.pdf.
>
>I had seen a episode on discovery in which a robot tries to walk even
>if legs are twisted. Can we program such robot to look for electrical
>energy when battery is low?  For example, robot should detect presence
>of live wire, appropriate voltage in wire and charge itself. As live
>wire has electric(magnetic) field, may be it is possible to program
>robot.
>
>That will be a breakthrough in understanding origin of life.

It will be no breakthrough at all.  I believe many self-mobile robots
are already programmed to return to a home base and plug themselves
into a recharger when their batteries are low.

It is quite trivial to sense the level of nutrients/energy
supplies/whatever and use that value to trigger "feeding behavior"
when that value is too low.

Modern artificial intelligence can, in fact, do much more than that to
emulate emotions.




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