What Is the Importance of Cell Structure?

The cell theory states that every organism is made up of one or more cells, a cell is the smallest life unit and life develops from the growth and partitioning of single cells.

Identification

A cell is highly organized for metabolism, senses and responds to environmental stimuli and has potential to reproduce. All cells have a plasma membrane, DNA and a cytoplasm.

Types

There are two types of cells. Prokaryotic cells are generally the smallest, simplest cells. They are represented by bacteria and their DNA molecule is not surrounded by a nucleus. Eukaryotic cells have a membrane-enclosed nucleus and other organelles.

Features

Some organelles and structures of eukaryotic cells are plasma membrane, nucleus, mitochondria, ribosomes, golgi body and chloroplasts (found in plants).

Function

The nucleus of a cell contains DNA and also makes it easier to organize and copy the DNA. Mitochondria convert nutrients and oxygen into energy and are full of plasma membranes that hold the enzymes needed to make ATP (energy used during cellular respiration). Ribosomes are made of RNA and protein and are the site of protein synthesis.

Significance

The human body consists of many trillions of cells that vary considerably in shape and size yet have much in common. Differences in cell structure make different functions possible.

References

• Cell Structure And Function
• Cells Are The Starting Point
• Animal Cell Structure

Resources

• Cell Structures And Functions