6. Define the term 'cell, for plants/animals. Name the different organelles that make a cell. Explain why none of these is called the structural and functional unit of life
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cell is fundamental unit of life or structural , functional or hereditary unit of life.
cell wallor plasma membrane, mitochondria cytoplasm,nucleus,lysosome, plasid,rough endoplasmic reticulum, smooth endoplasmic reticulum,Golgi apparatus.
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- In biology, a cell is a membrane-bound unit that contains the basic components of life and is made up of which all living organisms are made.
- A single cell, such as a bacterium or yeast, is typically a complete organism in and of itself. As cells age, they gain specific roles.
- Cells are far larger than atoms, yet they are still tiny.
- Some of these single-celled creatures are spheres as small as 0.2 m in diameter (1 m = roughly 0.000039 inch), with a total mass of 1014 gram—equal to 8,000,000,000 hydrogen atoms.
- Human cells have a mass 400,000 times that of a single mycoplasma bacteria, however they are only approximately 20 m wide.
- To cover the head of a pin, a sheet of around 10,000 human cells would be needed, while each human organism is made up of more than 30,000,000,000,000 cells.
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