: Describe the cell theory using two examples to emphasize that cells are the fundamental basis for all life
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Cell theory :-
The scientific theory that all living organisms are made of cells as the smallest functional unit.
•The cell is the fundamental unit of structure and function in living things.
•All organisms are made up of one or more cells.
•Cells arise from other cells through cellular division.
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Cell theory states that living things are composed of one or more cells, that the cell is the basic unit of life, and that cells arise from existing cells.
The microscopes we use today are far more complex than those used in the 1600s by Antony van Leeuwenhoek, a Dutch shopkeeper who had great skill in crafting lenses. Despite the limitations of his now-ancient lenses, van Leeuwenhoek observed the movements of protista (a type of single-celled organism) and sperm, which he collectively termed “animalcules. ”
In a 1665 publication called Micrographia, experimental scientist Robert Hooke coined the term “cell” for the box-like structures he observed when viewing cork tissue through a lens. In the 1670s, van Leeuwenhoek discovered bacteria and protozoa. Later advances in lenses, microscope construction, and staining techniques enabled other scientists to see some components inside cells.
Examples:
Cells are the basic structural and functional unit of all life. Examples include red blood cells and nerve cells. Tissues. Tissues are groups of cells that share a common structure and function and work together.
The microscopes we use today are far more complex than those used in the 1600s by Antony van Leeuwenhoek, a Dutch shopkeeper who had great skill in crafting lenses. Despite the limitations of his now-ancient lenses, van Leeuwenhoek observed the movements of protista (a type of single-celled organism) and sperm, which he collectively termed “animalcules. ”
In a 1665 publication called Micrographia, experimental scientist Robert Hooke coined the term “cell” for the box-like structures he observed when viewing cork tissue through a lens. In the 1670s, van Leeuwenhoek discovered bacteria and protozoa. Later advances in lenses, microscope construction, and staining techniques enabled other scientists to see some components inside cells.
Examples:
Cells are the basic structural and functional unit of all life. Examples include red blood cells and nerve cells. Tissues. Tissues are groups of cells that share a common structure and function and work together.
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