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Updated: June 13, 2025
Under such conditions it is very probable that imperfect metabolism of body tissue occurs, and certain toxic products that are capable of irritating the muscles and articulations form. Clinical symptoms, and the presence of bacteria in the inflamed tissue indicate that bacteria and their toxins play an important part in the development of articular rheumatism.
Another brake is supplied by the waste products of metabolism in the system, the uric acid, carbonic acid, oxalic acid, etc., and the many forms of xanthines, alkaloids, and ptomaines.
It seems safer to say merely that a lower metabolism in the female is accompanied by a tendency to store materials. A long time will doubtless be required to work out the details of differences in metabolism in the two sexes. Some of the main facts are known, however, and the general effects of the two diverse chemical systems upon the life cycles of the sexes are quite obvious.
"In spite of his high rate of metabolism, the Nipe can store a tremendous amount of oxygen in his body, and can stay underwater for as long as half an hour without breathing apparatus if he conserves his energy. When he's wearing his scuba apparatus, he's practically a self-contained submarine. The pressure doesn't seem to bother him much. He's a tough cookie." Stanton nodded silently and slowly.
Light is the essential of vegetable growth or metabolism, and light quickly vanishes in depth of water, so that all ocean life must ultimately depend on the phyto-plankton. To discover the conditions of this life is therefore to go to the root of matters. At this point came an interlude descriptive of the various biological implements in use in the ship and on shore.
Food will not undergo such an oxidation except in the presence of protoplasm, nor will the phenomena of metabolism occur except in the presence of living protoplasm.
The former is constructive metabolism, or anabolism; the latter, destructive metabolism, or katabolism. A microscopic organism, particularly applied to bacteria. An optical instrument which assists in the examination of minute objects. The name applied to the three back teeth at each side of the jaw; the grinders, or mill-like teeth.
The difference is one of successive transferences and the period of time involved in evolutionary process. For example, it has taken a certain length of time for this cellular element in my hand to pass through the various periods of metabolism. At one period it was in the mineral kingdom subject to changes and transferences in the mineral state.
If such a creature were, by its own process of metabolism, to change much of its bulk for intellectual growth, we should at once arrive at a new class of creature more dangerous, perhaps, than the world has ever had any experience of a force which can think, which has no soul and no morals, and therefore no acceptance of responsibility.
"I wonder," said Phillip slowly, "what the anthropologists will say." "What do you mean?" "Maybe it was just a single mutation somewhere back there. Just a tiny change of cell structure or metabolism that left one line of primates vulnerable to an invader no other would harbor.
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