What are some interesting facts about cells

Cells are the basic unit of life, and they are responsible for a wide range of functions. Here are some interesting facts about cells:

Cells are incredibly small. The average cell is only about 10 micrometers in diameter, which is about the size of a red blood cell.
Cells are very diverse. There are over 200 different types of cells in the human body. Each type of cell has a specific function.
Cells are constantly dividing. Cells divide in order to grow and repair themselves.
Cells contain DNA. DNA is the genetic material that determines the characteristics of a cell.
Cells use energy to function. Cells use energy to power their activities.

What is the smallest cell in the human body? The sperm cell
What is the largest cell in the human body? The egg cell
What are the four main types of cells? Epithelial cells, connective tissue cells, muscle cells, and nerve cells
What is the function of the cell membrane? To protect the cell and regulate what enters and leaves the cell
What is the function of the nucleus? To store the cell's DNA

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What are some interesting facts about cells?