Introduction to Cell Biology
Cell biology is a fascinating field that explores the smallest unit of life, the cell. Cells are the building blocks of all living organisms. They perform necessary functions that keep organisms alive and thriving.
The Structure of Cells
Cells are composed of several key structures:
- Nucleus: The control center of the cell, containing DNA.
- Mitochondria: The powerhouse of the cell, generating energy.
- Ribosomes: The site of protein synthesis.
- Cell Membrane: A protective barrier that regulates what enters and exits the cell.
Types of Cells
There are two main types of cells:
- Prokaryotic Cells: Simple cells without a nucleus, such as bacteria.
- Eukaryotic Cells: Complex cells with a nucleus, including plants and animals.