Chemical-substance sentence example

chemical-substance
  • Just as every crystallizable chemical substance assumes a definite and constant crystalline form which cannot be accounted for otherwise than by regarding it as one of the properties of the substance, so every living organism assumes a characteristic form which is the outcome of the properties of its protoplasm.

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  • But whereas the crystalline form of a chemical substance is stable and fixed, the organized form of a living organism is unstable and subject to change.

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  • The influence of the chemical substance is either that of attraction or repulsion, the one being known as positive, the other as negative chemiotaxis.

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  • The same idea pervades old medical treatises; for a drug was not a chemical substance taking effect naturally on the human system, but something into which a supernatural virtue had been magically introduced, in order the more easily and efficaciously to be brought to bear upon the patient.

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  • Kirchhoff in announcing that the lines of the spectrum were characteristic of the chemical substance which emitted them, and in indicating the value of this discovery in chemical analysis.

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  • A hormone is a chemical substance that is produced in a special tissue within a gland.

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  • Monoamine oxidase (MAO) inhibitors-A type of antidepressant that works by blocking the action of a chemical substance known as monoamine oxidase in the nervous system.

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  • Parathyroid hormone-A chemical substance produced by the parathyroid glands.

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  • Each snack bar has no more than eight ingredients, all of which you can not only pronounce, but visualize as a real food and not some mysterious chemical substance.

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