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What is a cell how does it originate and how many types of cells are there

What is a cell how does it originate and how many types of cells are there 


3 Answers

25763 Points
one year ago
The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known organisms. A cell is the smallest unit of life. Cells are often called the "building blocks of life". The study of cells is called cell biology or cellular biology
Vikas TU
14149 Points
one year ago
Dear student 
Cells are the smallest living units that are capable of reproducing themselves. Each cell in your body was made from an already existing cell. All plants and animals are made up of cells.
All cells have a membrane. Cell membranes are the outer layers that hold the cell together. They let nutrients pass into the cell and waste products pass out. Not everything can pass through a cell membrane. What gets through and what doesn’t depends on both the size of the particle trying to get in and the size of the opening in the membrane.
Like all living things, cells die. The number of cells that an adult male loses per minute is roughly 96 million. Fortunately, in that same minute, about 96 million cells divided, replacing those that died. Just as you shed dead skin cells, dead cells from internal organs pass through and out of the body with waste products. The length of a cell’s life can vary. For example, white blood cells live for about thirteen days, cells in the top layer of your skin live about 30 days, red blood cells live for about 120 days, and liver cells live about 18 months.
The different types of cells in your body have different, specialized jobs to do. The specialization of cells depends almost always on the exaggeration of properties common to cells. For example, cells that line the intestine have extended cell membranes. This increases the amount of surface area that is available to absorb food. Nerve cells can be very long, which makes them efficient in sending signals from the brain to the rest of your body. Cells in heart muscle process a lot of energy, so they have a large number of mitochondrion, the part of the cells where energy is made.
Good Luck 
17 Points
10 months ago
  1. Cell is a very basic, fundamental and functional unit of an organism and less than a complete structure of cell can not ensure independent living 
Cell is originate from pre existing cell by the process of cell division 
  • there are two types of cell                                                                                                                                  1. On the basis of existence of cell                                                                                                                        it’s of two types                                            [1] prokaryote   [2] eukaryote                                            2. On the basis of number of cells                                                                                                                           it’s again of two types                                    [1] unicellular    [2] multicellular                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   THANKS !!                                                                                                                                                         I hope it will be helpful 

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