Questions and Answers
Who is credited with the discovery of large nerve cells with many branching extensions found in the cortex of the cerebellum of the brain?
Johann Evangelista Purkinje
Who is best known for his descriptions of cell nuclei and the continuous motion of minute particles in solution, which came to be called Brownian motion?
Robert Brown
Who concluded that all plant tissues are composed of cells and that an embryonic plant arises from a single cell?
Matthias Jakob Schleiden
Who is considered a founder of the cell theory and discovered pepsin, the first digestive enzyme prepared from animal tissue?
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What is the fundamental distinction recognized by Robert Brown between gymnosperms and angiosperms?
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Who first proposed the existence of cells?
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Which branch of Biology is concerned with the study of cells?
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What major development has greatly advanced the field of cytology?
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In which year was Robert Hooke's book 'Micrographia' published?
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What did Robert Hooke observe when he looked at small bits of bark from cork trees?
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Study Notes
Historical Figures in Biology
- Santiago Ramón y Cajal is credited with the discovery of large nerve cells with many branching extensions found in the cortex of the cerebellum of the brain.
Cell Theory and Description of Cellular Components
- Robert Brown is best known for his descriptions of cell nuclei and the discovery of Brownian motion, which is the continuous motion of minute particles in solution.
Plant Tissues and Embryonic Development
- Matthias Jakob Schleiden concluded that all plant tissues are composed of cells and that an embryonic plant arises from a single cell.
Founders of Cell Theory and Discovery of Enzymes
- Theodor Schwann is considered a founder of the cell theory and discovered pepsin, the first digestive enzyme prepared from animal tissue.
Plant Classification
- Robert Brown recognized the fundamental distinction between gymnosperms and angiosperms.
Early Proposals and Observations of Cells
- Matthias Jakob Schleiden and Theodor Schwann first proposed the existence of cells.
Branch of Biology Concerned with Cells
- Cytology is the branch of Biology concerned with the study of cells.
Advancements in Cytology
- The development of electron microscopy has greatly advanced the field of cytology.
Historical Publication and Observations
- Robert Hooke's book 'Micrographia' was published in 1665.
- When Robert Hooke looked at small bits of bark from cork trees, he observed that they were made up of little boxes or "cells".
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