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Biology Assignment Task I -

The Differences Between Prokaryotic and Eukaryotic cells

source : phschool.com

In my own opinion : "Everything that is alive are made from one kind of cell or another kind of cell. The cells are classified into two different types of cell: prokaryotic and eukaryotic cells. Prokaryotic cells are found in bacteria. They are singled cell organisms. The prokaryotic cells have cell membrane as well as the eukaryotic cell, which works as the barrier for separating things that passes through it. But prokaryotic cells are not as complex as the eukaryotic cells. As you can see from the picture, the prokaryotic cell has a very long tail called Flagellum. It allows the body to move around. The eukaryotic cells can be found in every living things except bacteria, including plants, animals, etc. They have three main things that work inside the compartment: information processing which is done by the nucleus, energy processing which is done by mitochondria, and lastly transporting and packaging biochemical products and reactions which is done by Golgi apparatus.

Based on my research, i have concluded the differences in the table below"

	Prokaryotic cell	Eukaryotic cell
Size	Small	Large
Structure	One unit	Compartments
Regulation	Simple	Complex
Information	Efficient	Redundant
Age	3.5 billion years ago	1.5 billion years ago
DNA	Held within the necleus	Floats freely around

Recources :

Eucaryotic: The cells of protozoa, higher plants and animals are highly structured. These cells tend to be larger than the cells of bacteria, and have developed specialized packaging and transport mechanisms that may be necessary to support their larger size. Use the Interactive animation of plant and animal cells to learn about their respective organelles.

Procaryotic: These cells are simple in structure, with no recognizable organelles. They have an outer cell wall that gives them shape. Just under the rigid cell wall is the more fluid cell membrane. The cytoplasm enclosed within the cell membrane does not exhibit much structure when viewed by electron microscopy.

source : http://www.cellsalive.com/cells/3dcell.htm

Features of Eukaryotes

Eu = "true", karyon = "nucleus"

The most noticeable feature that differentiates these more complex cells from prokaryotes is the presence of a nucleus, a double membrane-bound control center separating the genetic material, DNA (deoxyribonucleic acid), from the rest of the cell.
In addition to the plasma membrane, eukaryotic cells contain internal membrane-bound structures called organelles. Organelles, such as mitochondria and chloroplasts, are both believed to have evolved from prokaryotes that began living symbiotically within eukaryotic cells. These vital organelles are involved in metabolism and energy conversion within the cell. Other cellular organelles within eukaryotic cell structure carry out the many additional functions required for the cell to survive, thrive, grow and reproduce.
Eukaryotic cells can reproduce in one of several ways, including meiosis (sexual reproduction) and mitosis (cell division producing identical daughter cells).

Eukaryotic cells are more complex, evolving from a prokaryote-like predecessor. Most of the living things that we are typically familiar with are composed of eukaryotic cells; animals, plants, fungi and protists. Eukaryotic organisms can either be single-celled or multi-celled.

Features of Prokaryotes
Pro = "before", karyon = "nucleus"
Prokaryotes, the first living organisms to evolve, are primarily distinguished by the fact that they lack a membrane-bound nucleus. In fact, the only membrane in prokaryotic cells is the plasma membrane--the outer boundary of the cell itself. Their genetic material is naked within the cytoplasm, ribosomes their only type of organelle.
Prokaryotes are most always single-celled, except when they exist in colonies. These ancestral cells, now represented by members of the domains Archaea and Eubacteria, reproduce by means of binary fission, duplicating their genetic material and then essentially splitting to form two daughter cells identical to the parent.

Prokaryotes are evolutionarily ancient. They were here first and for billions of years were the only form of life. And even with the evolution of more complex eukaryotic cells, prokaryotes are supremely successful. All bacteria and bacteria-like Archaea are prokaryotic organisms.

source :
http://www.suite101.com/content/prokaryotic-and-eukaryotic-cells-a32332

please refer to the video link below for the clearer explanation