A Quote by Bonnie Bassler
Bacteria are single-celled organisms. Bacteria are the model organisms for everything that we know in higher organisms. There are 10 times more bacterial cells in you or on you than human cells.
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We're at a point in time which is analogous to when single-celled organisms were turning into multi-celled organisms. So we're the amoebas.
In nerve-free multicellular organisms, the relationships of the cells to each other can only be of a chemical nature. In multicellular organisms with nerve systems, the nerve cells only represent cells like any others, but they have extensions suited to the purpose which they serve, namely the nerves.
It has occurred to me that possibly the white corpuscles may have the office of picking up and digesting bacterial organisms when by any means they find their way into the blood. The propensity exhibited by the leukocytes for picking up inorganic granules is well known, and that they may be able not only to pick up but to assimilate, and so dispose of, the bacteria which come in their way does not seem to me very improbable in view of the fact that amoebae, which resemble them so closely, feed upon bacteria and similar organisms.
However, on many occasions, I examined normal blood and normal tissues and there was no possibility of overlooking bacteria or confusing them with granular masses of equal size. I never found organisms. Thus, I conclude that bacteria do not occur in healthy human or animal tissues.
Single cells analyze thousands of stimuli from the microenvironment they inhabit. The more awareness an organism has of its environment, the better its chances for survival. When cells band together they increase their awareness exponentially. Division of labor among the cells in the community offers an additional survival advantage. The efficiency it enables more cells to live on less. Evolution is based on an instructive, cooperative interaction among organisms and their environment enables life forms to survive and evolve in a dynamic world.
For the first half of geological time our ancestors were bacteria. Most creatures still are bacteria, and each one of our trillions of cells is a colony of bacteria.
It's incorrect to think of bacteria as these asocial, single cells. They are individual cells, but they act in communities, exactly the way people do.
Nature is flexible and resilient. Nature likes redundancy and dispersion. It is approximate and deals in gradients. All boundaries are permeable. Nature nests small systems like molecules within larger systems like cells, which in turn are nested in systems called organs, organisms, ecosystems. We grew from ancient one-celled ancestors. Nature likes mergers: we contain multitudes of other life forms within us. We stand at the crest of four billion years, bacteria molded into wondrous form, burning with a slow fire and about to take the next step.
Trying to understand fundamental processes that take place as organisms develop and how their various cells interact with one another - one can see what happens with those cells by asking questions about the fundamentals of biology.
Man, like other organisms, is so perfectly coordinated that he may easily forget, whether awake or asleep, that he is a colony of cells in action, and that it is the cells which achieve, through him, what he has the illusion of accomplishing himself.
Take the entire 4.5-billion-year history of the earth and scale it down to a single year, with January 1 being the origin of the earth and midnight on December 31 being the present. Until June, the only organisms were single-celled microbes, such as algae, bacteria, and amoebae. The first animal with a head did not appear until October. The first human appears on December 31. We, like all the animals and plants that have ever lived, are recent crashers at the party of life on earth.
By weight, you are more human than bacteria, because your cells are bigger, but by numbers, it's not even close.
Perhaps bacteria may tentatively be regarded as biochemical experiments; owing to their relatively small size and rapid growth, variations must arise much more frequently than in more differentiated forms of life, and they can in addition afford to occupy more precarious positions in natural economy than larger organisms with more exacting requirements.
The elementary parts of all tissues are formed of cells in an analogous, though very diversified manner, so that it may be asserted, that there is one universal principle of development for the elementary parts of organisms, however different, and that this principle is the formation of cells.
Harmful bacteria, viruses, calcium-forming micro-organisms, and candida are part of our world. Unfortunately, so are toxic chemicals, including everything from pesticides to car pollution to nuclear radiation to most municipal tap waters.
The existence of common features in different forms of life indicates some relationship between the different organisms, and according to the concept of evolution, these relations stem from the circumstance that the higher organisms, in the course of millions of years, have gradually evolved from simpler ones.
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