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Q: For what discovery made in 1839 is Johann Evangelist Purkinje Known?
  • A. For the discovery of nucleus
  • B. For Proposing a fatty bilayer membrane
  • C. For the discovery of plasma membrane
  • D. For coining the term protoplasm
Correct Answer: Option D - Johann Evangelist Purkinje was a pioneer Czech experimental physiologist whose extensive research significantly advanced the fields of histology, embryology and pharmacology. In 1839, he introduced "protoplasm" as a scientific term to describe the fluid substance of a cell. Protoplasm consists of all the living contents of a cell including the cytoplasm and nucleus.
D. Johann Evangelist Purkinje was a pioneer Czech experimental physiologist whose extensive research significantly advanced the fields of histology, embryology and pharmacology. In 1839, he introduced "protoplasm" as a scientific term to describe the fluid substance of a cell. Protoplasm consists of all the living contents of a cell including the cytoplasm and nucleus.

Explanations:

Johann Evangelist Purkinje was a pioneer Czech experimental physiologist whose extensive research significantly advanced the fields of histology, embryology and pharmacology. In 1839, he introduced "protoplasm" as a scientific term to describe the fluid substance of a cell. Protoplasm consists of all the living contents of a cell including the cytoplasm and nucleus.