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The effects of the substratum, divalent and monovalent cations on locomotion in Amoeba proteus

✍ Scribed by Dwight L. Hopkins

Publisher
John Wiley and Sons
Year
1929
Tongue
English
Weight
635 KB
Volume
48
Category
Article
ISSN
0362-2525

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✦ Synopsis

Abstract

The rate of locomotion in Amoeba proteus is dependent upon the nature of the substratum, the nature of the different divalent and monovalent cations present, and the ratio of the amount of the monovalent cations to the amount of calcium or strontium. Calcium is more efficient than strontium in antagonizing potassium. Magnesium and barium do not antagonize potassium. The four monovalent cations studied in antagonizing calcium are efficient in the following order: Na>K>Li>Rb. Calcium and potassium are more effective against antagonistic cations when combined with chlorine than when combined with phosphate.

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