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Answer:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. ... Cells have many parts, each with a different function.
Explanation:
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Components
Three Parts of Cell Theory
All organisms are made of cells. Cells are the smallest unit of life. ...
Cells are the most fundamental unit of life. Organisms can be single cells, which hold all of the components necessary for a metabolism, or they can be more complex. ...
Cells come from other cells.
Outline
The cell theory states that: All living organisms are composed of cells. Multicellular organisms (example: humans) are composed of many cells while unicellular organisms (example: bacteria) are composed of only one cell. Cells are the basic unit of structure in all organisms.
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Answer:
The basic structural and functional unit of life is known as cell.
Additional Information:
The word 'cell' was first coined by Robert Hook in 1665. He was the British scientist. Whereas Schilden and Schwan established the cell theory.
Longest cell in human body is Neuron, smallest cell is Mycoplasma gallisepticum and biggest cell is egg (of ostrich).
There are total two types of cell i.e. prokaryotic cell (nucleus absent) and eukaryotic cell (nucleus present). Further difference between prokaryotic cell and eukaryotic cell is that size of prokaryotic cell is small, contains single chromosome, membrane bound cell organelles are absent. Whereas size of eukaryotic cell is large, conations more than one chromosome and cell organelles are present.
Note: Sudy of cell is known as Cytology.