Cell theory 1

Robert Hook discovered this cell in 1665. He examined a very thin cork sheet (under a coarse compound microscope) and saw many small holes. He said that it looked like a honeycomb partition. Because of this relationship, Hook calls them cells, they still recognize the name. However, Hook does not know their real structure or function. [1] A description of Hook on these cells (cell walls that are not actually living) is posted in Micrographia. [2]. His cell observation did not show nuclei or other organelles found in most living cells.

The first person to observe living cells with a microscope Antony van Leeuwenhoek (although the first person who made a compound microscope was Zacharias Janssen) depicted the algae Spirogyra in 1674 and named it Mobile. Animals. "[3]. Leeuwenhoek may have seen bacteria. [4] Cellular theory contrasts with the first theory of life advocated by cells.

Ludolph Christian Treviranus [5] and Johann Jacob Paul Moldenhawer [6] proposed the idea that cells can be divided into individual units. By ultimately declaring that "cells are a fundamental element of tissue", Henri Dutrochet has formulated one of the fundamental principles of modern cell theory [7].

Observations such as Hooke, Leeuwenhoek, Schleiden, Schwann and Virchow led to the development of cell theory. Cellular theory is a widely accepted interpretation of the relationship between cells and organisms. The cell theory states as follows. • All organisms or organisms are composed of cells. • New cells are created by old cells divided into two parts. • Cells are the basic building block of life. Cellular theory, regardless of how big or small, how simple or complex it is applied to all creatures. According to research, cells are shared by all organisms, so they can provide information on all life. Since all cells are derived from other cells, scientists can study the cells and understand all other functions of growth, reproductive and biology. By understanding the cells and their function, you can learn about all kinds of creatures. The reliability of developing cellular theory is usually given to three scientists: Theodor Schwann, Matthias Jakob Schleiden and Rudolf Virchow. In 1839, Schwan and Schleiden believed that cells are the basic unit of life. Their theory accepted the first two principles of modern cell theory (see the next section). However Schleideen's cell theory differs from modern cell theory in that he proposes a method of spontaneous crystallization he calls "free cell formation" [8]. In 1858 Rudolph Virchow concluded that all cells were derived from existing cells and completed the classical cell theory.

The theory of symbiosis symbiosis is the theory of evolution, assuming that internal symbiosis between prokaryotic and eukaryotic host cells is a means of mitochondria and chloroplast in eukaryotic cells. Supporters of theory believe that larger cells ingest smaller free cells after about 1.5 billion years. - Prokaryotes (bacteria) and intracellular prokaryotes exist as symbiotic organisms. The results supporting this theory seems to suggest that mitochondria are derived from proteobacteria (such as SAR 11 clade) 2, while chloroplasts are derived from cyanobacteria (especially nitrogen-fixing cyanobacteria) 3 . Other evidence that seems to support this theory are as follows:

Observations such as Hooke, Leeuwenhoek, Schleiden, Schwann and Virchow led to the development of cell theory. Cellular theory is a widely accepted interpretation of the relationship between cells and organisms. The cell theory states as follows. • All organisms or organisms are composed of cells. • New cells are created by old cells divided into two parts. • Cells are the basic building block of life. Cellular theory, regardless of how big or small, how simple or complex it is applied to all creatures. According to research, cells are shared by all organisms, so they can provide information on all life. Since all cells are derived from other cells, scientists can study the cells and understand all other functions of growth, reproductive and biology. By understanding the cells and their function, you can learn about all kinds of creatures. In 1839, Schwan and Schleiden believed that cells are the basic unit of life.