Another explanation attributes this fixation of free nitrogen to microorganisms existing in the rootlets of the plant.
Microorganisms affect it in a variety of ways, either converting it into simple fatty acids, or condensing it into longer-chain compounds.
The growth of many bacteria is either wholly dependent upon or greatly stimulated by the presence of vitamine-like substances in the medium upon which the microorganisms grow.
An eggshell sealed in prolonged contact with the soil tends to rot with the result that it is easily ruptured, and even if it is not broken there is the likelihood of fungi or microorganisms gaining entry and killing the embryo.
There is, however, a possibility that chiggers are vectors of microorganisms causing diseases in reptiles, just as they are for certain mammals (including humans) in some parts of the world.
There were plants, as has come about wherever microorganisms have broken down rock to a state where it can nourish vegetation.
Familiar microorganisms and a standard vegetation added to the practicality of human settlements on otherwise alien worlds.
The true nature of the virus is not known, and although certain microorganisms have been described which are found in the pock, there is no proof that they are responsible for producing the poison.
All attempts to isolate the microorganisms or the contagium, whatever that may be, have failed.
Infection, as laid down above, refers at present in a comprehensive way to all microorganisms capable of setting up disease in the body.
This condition is caused by an infection with certain microorganisms (streptococci, necrosis bacilli) and may be contagious.
Some microorganisms are transmitted directly from one animal to another, and the diseases produced may be called contagious.
Survival ofMicroorganisms in a Simulated Martian Environment.
Response ofMicroorganisms to a Simulated Martian Environment.
Cold and Aridity as Constraints on the Survival of Terrestrial Microorganisms in Simulated Martian Environments.
Microorganisms are the most probable inhabitants of Mars although the possibility is not excluded that their physiological features will be very specific.
He knew that the invisible R-rays were killing all the microorganisms in his body, so that no disease germ or stray fungus would be carried from planet to planet.
If infection takes place, the organism reacts to it through inflammatory processes, and by means of these endeavors to overcome and eliminate microorganisms and poisons from the system.
We regard microorganisms as secondary manifestations of disease, and maintain that bacteria and parasites live, thrive and multiply to the danger point in a weakened and diseased organism only.
It has also been found that the phagocyte and tissue cells in the neighborhood of the area of irritation produce antipoisons or natural antitoxins, which neutralize the bacterial poisons and kill the microorganisms of disease.
The fear instilled by the bacterial theory of disease is frequently more destructive than the microorganisms themselves.
During this stage morbid matter, poisons, microorganisms and other excitants of inflammation gather and concentrate in certain parts and organs of the body.
Just as the ordinary yeast germ multiplies in a sugar solution only, so the various microorganisms of disease thrive and multiply to the danger point only in their own peculiar and congenial kind of morbid matter.
Since the microscope has revealed the presence and seemingly entirely pernicious activity of certain microorganisms in connection with certain diseases, it has been assumed that bacteria are the direct, primary causes of most diseases.
We claim that it is the waste and morbid matter in the system which afford the microorganisms of disease the opportunity to breed and multiply.
The phagocytes absorb morbid matter, poisons or microorganisms by enveloping them with their own bodies.
I demonstrated that the microorganisms of disease are not the unmitigated nuisance and evil which they are commonly regarded, but that, like everything else in Nature, they, too, serve a useful purpose.
In a way, therefore, microorganisms are just as much the product as the cause of disease and act as scavengers or eliminators of morbid matter.
The growth and multiplication of microorganisms depend furthermore upon a congenial, morbid soil.
Then as soon as the adverse conditions mentioned above are removed, the microorganisms assume active form and begin to grow and reproduce.
The mold on bread and fruit, the odor from decaying meat and eggs, the liquefaction of decayed eggs, and the gas from fermenting canned fruit are caused by microorganisms existing and growing in these foods.
Twenty-four hours is sufficient time for the microorganisms to change from the spore to the active form.
Food may be preserved by opposing the growth of microorganisms or by destroying them.
Low temperatures, certain preservatives, and drying destroy microorganisms or retard their growth.
Many microorganisms are destroyed by heating them for a few minutes to boiling temperature.
Some microorganisms in the spore form are able to resist the temperature of boiling water for an hour or longer.
If such is the case, when the canned foods are cooled and the conditions are favorable for growth, the microorganismsassume active form, begin to grow, and cause the decomposition of food.
The destruction of microorganisms by heat is the basic principle of preserving much food, especially fruit and vegetables.
Destruction of microorganisms in the spore form can be accomplished in a short time by subjecting them to very intense heat.
Some of the microorganisms in certain foods, especially vegetables and fruits grown in a dry season, are capable of spore formation.
When subjected to extreme heat or cold, intense drying, or when there is lack of food, certain microorganisms assume a spore form, i.
Such changes are especially liable to occur when the part becomes infected with microorganisms that have the property of destroying tissue and thus causing the production of pus.
Possibly pathogenic microorganisms can be used for biological control of cockroaches; this approach seems to have been little explored.
Description of microorganisms supported on the bacteriological analysis in the alimentary tracts of the bed bug, house fly, and cockroach.
Desoxyribose nucleic acid in the symbiotic microorganismsof the cockroach, Blattella germanica.
These habitats are particularly important in view of the demonstrated migrations of cockroaches from sewers into dwellings and the possible dissemination of pathogenic microorganisms from feces to food.
However, very few experiments have been performed to determine the importance, if any, of these microorganisms to the host.
The passage of microorganisms through the digestive tract of Blaberus craniifer mounted under controlled conditions.
The destructive effect of microorganisms both in the interior of the cheese and upon its surface is rapid.
For cheese-making purposes, a starter is a substance used in the manufacture of dairy products having a predominance of lactic acid-forming microorganisms in an active state.
We have analyzed the processes; discovered microorganisms that hinder or help; perfected devices and machines; devised tests of many kinds; studied the chemistry; developed markets for standardized commodities.
The virulence depends on the patient's power of resistance, and whether or not there are septic microorganisms mixed with the syphilitic spirochetes.
Food contaminated with microorganisms is handled in the same manner as when contaminated with the more common foodborne disease-producing microorganisms.
They may be living microorganisms or spore forms of the organism.
A vaccine is a liquid, the result of bacterial growth, injected into a patient in order to render him immune from that particular disease which is caused by sufficient infection with the microorganisms in question, e.
Its presence in soil steadily feeds a healthy ecology of microorganismsimportant to plant health, and whose activity accelerates release of plant nutrients from undecomposed rock particles.
Contributing large quantities of actively growing microorganisms through mass inoculation with material from a two-week-old pile also helped.
These microorganisms can supply all the nitrate nitrogen fast-growing legumes can use if the soil is also well endowed with other mineral nutrients rhizobia need, especially calcium and phosphorus.
And the complex ecology of decomposition will go through its inevitable changes as the microorganisms respond to variations in temperature, aeration, pH, etc.
Most important, soil contains nitrification microorganisms that readily convert ammonia gas to nitrates, and clay that will catch and temporarily hold ammonia.
These nitrification microorganisms are extremely efficient at reasonable temperatures but cannot survive the extreme high temperatures that a really hot pile can achieve.
In a compost pile the opposite occurs: we substitute a violent fermentation by microorganisms such as bacteria and fungi.
The slimes and gums that cement soil particles into relatively stable aggregates are formed by microorganisms as they consume soil organic matter.
Extensive decomposition of the bedding by other small soil animals and microorganisms begins to be significant.
Perhaps in this biotech era, recombinant genetics will find high-tech ways to tailor make improved microorganisms and we'll surpass the Russians.
As time goes on, the bedding is gradually broken down by cellulose-eating microorganismswhose decay products are consumed by the worms and the box gradually fills with casts.
Some garbagey parts of it have decomposed significantly, others not at all; most of it is still quite recognizable but much of the vegetation has a grayish coating of microorganisms or has begun to turn light brown.
Microorganisms live in thin films of water that adhere to organic matter whereas fungi only grow in humid conditions; if the pile becomes dry, both bacteria and fungi die off.
There probably are more species of microorganisms than all other living things combined, yet we often can't identify one species from another similar one by their appearance.
It is the duty of the surgeon to guard against the contact of microorganisms in the wound and to employ whatever means science has evolved for their destruction.
Invasion by pathogenic microorganisms which act injuriously upon the tissues, causing disease.
Peroxide of Hydrogen+ when used as a 15 volume mixture or diluted, seems to have a direct action upon pus generation by destroying microorganisms of the pus.
The question how to destroy microorganisms is one of the most important in bacteriology.
These diseases are caused by different microorganisms that may be found in the digestive tract and air-passages of healthy birds, insanitary conditions and decomposed feed, especially meat.
The microorganisms causing this disease belong to both the plant and animal kingdoms.
This is a slender, rod-shaped microorganisms (Fig.
His work in discovering the cholera vibrio, the microorganisms of Oriental ophthalmia and his researches on the nature and treatment of tuberculosis, made his name known everywhere.
Pasteur's dictum that putrefaction is a micro-organic phenomenon, caused Lister to experiment with the view of preventing the development of microorganismsin wounds.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "microorganisms" in a variety of sentences. We hope that you will now be able to make sentences using this word.
