Cells are the basic unit bounded by the membrane that consists of the fundamental molecules of life of which all living organisms are made up of. Cell Biology encompasses everything about cells from its basic structure to the functions of every cell organelle. A single cell is an organism in itself such as yeast or bacterium; other cells gain special functions soon after they mature. These acquire unique functions as they mature. They cooperate with other cells and become the building blocks of multicellular organisms such as in humans and animals. A group of small bacteria called mycoplasmas and theyare the smallest known cells. Some of these unicellular organisms are spheres of about 0.3 micrometers in diameter with a mass of 10-14 gram.

A cell can be defined as the smallest unit of life. It is the structural, functional and biological unit of all living beings. A cell can replicate itself independently and are thus referred to as thebuilding blocks of life.Each cell contains a cytoplasm which is enclosed by a membrane and contains several biomolecules like proteins, nucleic acids, etc.

The cell was first discovered in 1665 by Robert Hooke. Then in 1839, the Cell Theorywas developed.

Cell Theory is one among the basic principles of biology and wasproposed by the German scientists named Theodor Schwann and Matthias Schleiden. The cell theory states that:

Visit cell theory to learn more about this topics.

Cells are similar to small factories with different laborers and departments that work all the time to make life possible. Various kinds of cells perform different functions like protein synthesis and energy production.There are two major kinds of living organisms based on their cellular structure namely: prokaryotes and eukaryotes.

Cellular life is entirely dependent on the various chemical process for survival. These chemical reactions mainly occur in a watery solution within the cell known as cytoplasm.

There are several difference features between Eukaryotic and Prokaryotic cells. The below table states the comparison between cell organelles and structures found in a typical animal eukaryotic cell and prokaryotic cell.

A cell is bounded by a plasma membrane that forms a selective barrier allows nutrients to enter and leave waste products.

Visit cell structure and function to know the detailed functions of the cells. To learn more about cells, check the links given below.

To learn more biology topics in an engaging and effective way, keep visiting BYJUS.

See more here:
Cells- Cell Biology | Definition, Types of Cells & Their ...