Free oxygen may be supplied directly from the blood in the capillaries distributed to the gland which he describes.
Pasteur also, during the progress of this work, discovered the class of organisms which can grow in the absence of free oxygen--the anaerobic bacteria.
This does not mean that all organisms must obtain their supply from free oxygen, however, as animals and plants generally do.
There are still other kinds which may grow either in the presence of free oxygen or in its absence, hence the term facultative anaerobes (usually) is applied to them.
Others cannot grow in the presence offree oxygen and are therefore named anaerobic bacteria or anaerobes (strict is unnecessary).
The vibrios live and multiply without the smallest supply of air or of free oxygen.
The more, on the contrary, the life of the ferment is carried on without the presence of free oxygen, the greater is its power of decomposing and of fermenting the saccharine matter.
All this liquid mass, then, is inclosed between the wooden sides of the vat and a deep layer of heavy gas which contains no trace of free oxygen.
If one of the spores of the splenic fever bacillus (for it also produces spores) could germinate, the product of the germination, deprived of free oxygen, would at once perish.
As these processes are taking place everywhere, it might be expected that the amount of free oxygenin the atmosphere should decrease, and this decrease should proceed somewhat rapidly.
In the long period of the life of the earth an equilibrium has been attained between the processes absorbing and evolving oxygen, by which a definite quantity of free oxygen is preserved in the entire mass of the atmosphere.
If an animal be placed in an atmosphere of free oxygen, at first its movements are very active and a general invigoration is remarked, but a reaction soon sets in, and death may ensue.
As regards the air over the entire earth's surface its amount of oxygen hardly decreases, because in nature there is a process going on which renews the supply of free oxygen.
There is free Oxygen in the blood, and the most important change to which all organic substances are liable there is oxidation.
Free oxygen is continually entering the blood through the air-cells of the lungs.
They grow both in the presence and in the absence of free oxygen.
A large number of bacteria are able to live either in the presence or in the absence of free oxygen.
They can grow in the presence or in the absence of free oxygen.
There is an utter absence of light, an absence of free oxygen, and also an absence of that diminished pressure which my experiments seem to show is favourable to the promotion of many kinds of fermentative change.
At all events, he argues, fermentation ought to be slower in the presence of free oxygen.
A little older still, they remain absolutely inert in a medium deprived of free oxygen.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "free oxygen" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
