Cell: The Unit of Life

State Council of Educational Research and Training, Tamil Nadu (2020) Cell: The Unit of Life. [Teaching/Learning Resource]

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Abstract

Aristotle (384-322BC), was the one who first recognised that animals and plants consists of organised Unit III: Cell biology and Biomolecules 118 structural units but unable to explain what it was. In 1660’s Robert Hooke observed something which looks like ‘honeycomb with a great numbers of little boxes’ which was later called as ‘cell’ from the cork tissue. In 1665, He compiled his work as Micrographia. Later, Anton Van Leeuwenhoek observed unicellular particles which he named as ‘animalcules’. Robert Brown (1831-39) described the spherical body in plant cell as nucleus. H. J. Dutrochet (1824), a French scientist, was the first to give an idea on cell theory. Later, Matthias Schleiden (German Botanist) and Theodor Schwann (German Zoologist) (1833) outlined the basic features of the cell theory. Rudolf Virchow (1858) explained the cell theory by adding a feature stating that all living cells arise from pre-existing living cells by ‘cell division’.

Item Type: Teaching/Learning Resource
Program: A publication under Free Textbook Programme of Government of Tamil Nadu
Learning outcomes: The learner will be able to, • Understand the ideas of cell theory and the different concepts associated with it • Recognize the basic structure of cell and differentiate the cells of animals, plants, bacteria and viruses • Explain the structure and functions of cell organelles including nucleus • Recognize the structure of chromosome and its types
Access: Open
Uncontrolled Keywords: Cell biology
Subjects: Biology
Curriculam Level: 5. Senior Secondary
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Depositing User: COL Staff
Date Deposited: 11 Apr 2021 03:32
Last Modified: 22 Apr 2021 00:19
URI: https://tuv.oer4pacific.org/id/eprint/216

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