Cells are the basic building blocks of living things. The human body is composed of trillions of cells, each with their own specific function. They are the fundamental units of life. All living organisms are dependent and composed of cells to function normally, whether they are multicellular or unicellular. According to scientists, there are approximately 75 to 100 trillion cells and 100 different types of cells in our body. Some interesting facts about cells are listed in the points below.
- There are 2 basic types of cells
There are lots of different types of cells but primarily there are 2 types of cells- Eukaryotic cells and Prokaryotic cells. Plants, animals, protists, fungi, etc. are organisms that contain eukaryotic cells and archaeans, bacteria, etc. are organisms that contain prokaryotic cells.
- More bacterial cells are present in the human body than human cells.
Researchers have estimated that about 95% of all the cells in the human body are bacteria. Majority of these bacterias can be found in the human digestive tract. Human skin also contains billions of bacteria and microbes.
- Group of similar cells forms tissues
A group of cells with a shared function and structure is known as tissues. Different types of tissues arrange together to form an organ. And a group of organs forms an organ system in the human body.
- Longest cell in human body
The longest cells in the human body are the motor neurons. These cells can be 1.37 meters (4.5 feet) long. It runs from the lower spinal cord to the big toe.
- Cell membrane
Human cell structure has a special membrane that holds the content of the cell together. The membrane of the cell is not just a sac as it acts as receptors that identify the cell to other cells.
- Cells have varying lifespan
Based on the function and type of cells, they have different life spans within the human body. The lifespan of human cells varies from a few days to one year.
- Cells contain genetic material
Cells contain RNA (ribonucleic acid), and DNA (deoxyribonucleic acid). These are the genetic information that is necessary for directing a cellular activity in a living organism.
- Size of a cell
The size of a cell is usually determined by its diameter and not by its length. The average size of human cell ranges between 10 µm and 100 µm (µm is 1 thousandth of a millimeter or 1 millionth of a meter).
- Cells commit suicide
When a cell undergoes some kind of infection or gets damaged, it self-destructs itself by a process known as apoptosis. When a cell is not able to do apoptosis it results in the development of cancer.
These were some interesting facts about cells. Subscribe to Byju’s YouTube Channel to learn more interesting topics in an interactive and engaging manner.