The Cell : definition, types of cell
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| What is cell ? |
The Cell
Cell are a wonderful structure found in all living beings. Cells may be of irregular shape. All the activities related to life take place in the cell. For example, respiration, digestion, reproduction etc. The cell was first discovered by Robert Hooke, Robert Hooke first observed the cell in the cork of a bottle with the help of his own microscope. In which some figures of the same size were seen falling from the walls on all four sides. These small figures were called cells.
What Robert Hooke actually saw was only the cell wall. Because cork cells are dead. Cell is the smallest unit of life. Leuwenhoek in 1674 called the cell the basic unit of life. Leuwenhoek was the first to see independent cells such as bacteria, RBCs, protozoa, sperm, etc. Alfonso Corti told about a living substance inside the cell in 1772.
Cell - Definition and Examples
Definition
"Cell is the basic unit of life. In this, all the activities related to life like breathing, digestion, reproduction, etc".
Schleiden and Schwann presented the cell theory in 1839 in their book "The Cell". According to which all organisms are made up of cells and cells.
"All living organisms consists of cells"
A scientist named Virchow expanded this theory in 1855 and said that all living cells are formed from previous living cells.
"The cell comes from preexisting cell (omnis cellula-e-cellula)".
Types of cell
There are mainly two types of cells:- prokaryotic and eukaryotic cells.
Prokaryotic cells
The prokaryotic cell is found in the blue-green algae, Mycoplasma, bacteria and PPLO. Generally these cells are much smaller than eukaryotic cells and divide much more rapidly. Prokaryotic cells are of different sizes. Such as- coccus, vibrio, irregular, spiral and bacillus.
The Cell (biology)
Eukaryotic cells
Eukaryotic cells are the cells found in all plants, fungi and all animals. Due to the presence of membranous organelles in these cells, the cytoplasm appears to be broad-celled. The nucleus is present in the eukaryotic cell and all the different types of cell organelles are present. For example, receptor mitochondria, Golgi body, Endoplasmic reticulum etc. In these types of cells, the genetic material is present in the form of chromosomes.
Dear students and users, we hope that you will find the information given by us useful and useful. If you want to read similar articles related to Biology and Science, then you can also see our other posts. You can also share this article with your friends so that they can also understand this knowledge-filled article for the work of their school, college etc.
"Cell is the basic unit of life. In this, all the activities related to life like breathing, digestion, reproduction, etc".
Schleiden and Schwann presented the cell theory in 1839 in their book "The Cell". According to which all organisms are made up of cells and cells.
"All living organisms consists of cells"
A scientist named Virchow expanded this theory in 1855 and said that all living cells are formed from previous living cells.
"The cell comes from preexisting cell (omnis cellula-e-cellula)".
Types of cell
There are mainly two types of cells:- prokaryotic and eukaryotic cells.
Prokaryotic cells
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| Fig : Prokaryotic cell bacteria |
The prokaryotic cell is found in the blue-green algae, Mycoplasma, bacteria and PPLO. Generally these cells are much smaller than eukaryotic cells and divide much more rapidly. Prokaryotic cells are of different sizes. Such as- coccus, vibrio, irregular, spiral and bacillus.
The Cell (biology)
Eukaryotic cells
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| Fig : Eukaryotic cell plant cell |
Eukaryotic cells are the cells found in all plants, fungi and all animals. Due to the presence of membranous organelles in these cells, the cytoplasm appears to be broad-celled. The nucleus is present in the eukaryotic cell and all the different types of cell organelles are present. For example, receptor mitochondria, Golgi body, Endoplasmic reticulum etc. In these types of cells, the genetic material is present in the form of chromosomes.
Dear students and users, we hope that you will find the information given by us useful and useful. If you want to read similar articles related to Biology and Science, then you can also see our other posts. You can also share this article with your friends so that they can also understand this knowledge-filled article for the work of their school, college etc.
This definitions are very important for my class topics in biology
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