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Accumulation

Accumulation

The action or process of accumulating, state of being or having accumulated, a collecting together.

(Science: pharmacology) Repeated exposures to a chemical or drug may result in the progressive increase of its concentration in an organism, organ or tissue. Illness or other effects may increase with successive doses.

factors involved in accumulation include selective binding of the drug to tissue molecules, concentration of fat soluble drugs in body fat, absent or slow metabolism of the drug, and slow excretion of the drug.

accumulation is a mass balance effect where input exceeds output.


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efficiency of body cells

... The metabolic load of such rogue cells would be quite big, so I'd assume evolution has had time to find ways for our bodies to prevent the accumulation of these cells. A bit like our body kills most cells that are about to turn cancerous. That being said, I must admit that this is an interesting ...

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by biohazard
Wed Aug 12, 2009 6:52 pm
 
Forum: Cell Biology
Topic: efficiency of body cells
Replies: 7
Views: 200

Re: How to be "good at the bench"

... Protocols, or references to the protocols used d. EVERYTHING THAT HAPPENS, AND THAT DOESN’T HAPPEN, IS DATA!! Record everything. e. At the end of accumulation of all data, write a one-sentence summation of the results of the experiment. Include aberrations, and any comments as to why the experiment ...

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by jangajarn
Sat May 23, 2009 7:15 pm
 
Forum: General Discussion
Topic: How to be "good at the bench"
Replies: 3
Views: 1441

Future Human Evolution

... efficiently from the gene pool, and thus we must rely even more on technology. This might create a sort of positive-feedback loop, where accumulation of these genetic elements actually speed up our evolution towards "symbiosis" with technology, if you like.

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by biohazard
Thu Apr 09, 2009 6:56 am
 
Forum: Evolution
Topic: Future Human Evolution
Replies: 41
Views: 5628

Any other explanations other than Mutation?

Accumulation of genes is a process that can extend ad infinitum as long as there is a constant supply of new mutations and genetic variation for natural selection to act upon. That said, there are some theories such as the ...

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by alextemplet
Tue Apr 07, 2009 2:47 pm
 
Forum: Evolution
Topic: Any other explanations other than Mutation?
Replies: 6
Views: 1740

Any other explanations other than Mutation?

... answering this question for school: Do biologists cite changes other than mutation that would account for one-celled animals changing to mammals? Accumulation of desirable genes reaches a limit, right? So, the effect of selection is much too limited to account for the origin of mammals. . . Thoughts ...

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by Bernadette
Tue Apr 07, 2009 2:27 pm
 
Forum: Evolution
Topic: Any other explanations other than Mutation?
Replies: 6
Views: 1740
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